title: Cuneiform

text: The latest known cuneiform tablet dates to 75 AD. The script fell totally out of use soon after and was forgotten until its rediscovery and decipherment in the 19th century. The study of cuneiform belongs to the field of Assyriology. An estimated half a million tablets are held in museums across the world, but comparatively few of these are published. The largest collections belong to the British Museum ( 130,000 tablets), the Vorderasiatisches Museum Berlin, the Louvre, the Istanbul Archaeology Museums, the National Museum of Iraq, the Yale Babylonian Collection ( 40,000 tablets), and Penn Museum.


title: Cuneiform

text: Writing began after pottery was invented, during the Neolithic, when clay tokens were used to record specific amounts of livestock or commodities. In recent years a contrarian view has arisen on the tokens being the precursor of writing. These tokens were initially impressed on the surface of round clay envelopes (clay bullae) and then stored in them. The tokens were then progressively replaced by flat tablets, on which signs were recorded with a stylus. Writing is first recorded in Uruk, at the end of the 4th millennium BC, and soon after in various parts of the Near-East.


title: Cuneiform

text: The cuneiform writing system was in use for more than three millennia, through several stages of development, from the 31st century BC down to the second century AD. The latest firmly dateable tablet, from Uruk, dates to 79/80 AD. Ultimately, it was completely replaced by alphabetic writing (in the general sense) in the course of the Roman era, and there are no cuneiform systems in current use. It had to be deciphered as a completely unknown writing system in 19th-century Assyriology. It was successfully deciphered by 1857.


title: Cuneiform

text: The cuneiform script was developed from pictographic proto-writing in the late 4th millennium BC, stemming from the near eastern token system used for accounting. The meaning and usage of these tokens is still a matter of debate. These tokens were in use from the 9th millennium BC and remained in occasional use even late in the 2nd millennium BC. Early tokens with pictographic shapes of animals, associated with numbers, were discovered in Tell Brak, and date to the mid-4th millennium BC. It has been suggested that the token shapes were the original basis for some of the Sumerian pictographs.


title: Cuneiform

text: Mesopotamia's "proto-literate" period spans roughly the 35th to 32nd centuries BC. The first unequivocal written documents start with the Uruk IV period, from circa 3,300 BC, followed by tablets found in Uruk III, Jemdet Nasr, Early Dynastic I Ur and Susa (in Proto-Elamite) dating to the period until circa 2,900 BC.


title: Cuneiform

text: Originally, pictographs were either drawn on clay tablets in vertical columns with a sharpened reed stylus or incised in stone. This early style lacked the characteristic wedge shape of the strokes.


title: Cuneiform

text: Certain signs to indicate names of gods, countries, cities, vessels, birds, trees, etc., are known as determinatives and were the Sumerian signs of the terms in question, added as a guide for the reader. Proper names continued to be usually written in purely "logographic" fashion.


title: Cuneiform

text: The first inscribed tablets were purely pictographic, which makes it technically difficult to know in which language they were written. Different languages have been proposed though usually Sumerian is assumed. Later tablets after circa 2,900 BC start to use syllabic elements, which clearly show a language structure typical of the non-Indo-European agglutinative Sumerian language. The first tablets using syllabic elements date to the Early Dynastic I-II, circa 2,800 BC, and they are agreed to be clearly in Sumerian. This is the time when some pictographic element started to be used for their phonetical value, permitting the recording of abstract ideas or personal names. Many pictographs began to lose their original function, and a given sign could have various meanings depending on context. The sign inventory was reduced from some 1,500 signs to some 600 signs, and writing became increasingly phonological. Determinative signs were re-introduced to avoid ambiguity. Cuneiform writing proper thus arises from the more primitive system of pictographs at about that time (Early Bronze Age II).


title: Cuneiform

text: The earliest known Sumerian king, whose name appears on contemporary cuneiform tablets, is Enmebaragesi of Kish (fl. c. 2600 BC). Surviving records became less fragmentary for following reigns and by the end of the pre-Sargonic period it had become standard practice for each major city-state to date documents by year-names, commemorating the exploits of its "lugal" (king).


title: Cuneiform

text: Geoffrey Sampson stated that Egyptian hieroglyphs "came into existence a little after Sumerian script, and, probably, [were] invented under the influence of the latter", and that it is "probable that the general idea of expressing words of a language in writing was brought to Egypt from Sumerian Mesopotamia". There are many instances of Egypt-Mesopotamia relations at the time of the invention of writing, and standard reconstructions of the development of writing generally place the development of the Sumerian proto-cuneiform script before the development of Egyptian hieroglyphs, with the suggestion the former influenced the latter.


title: Cuneiform

text: Early cuneiform inscription were made by using a pointed stylus, sometimes called "linear cuneiform". Many of the early dynastic inscriptions, particularly those made on stone, continued to use the linear style as late as circa 2000 BC.


title: Cuneiform

text: In the mid-3rd millennium BC, a new wedge-tipped stylus was introduced which was pushed into the clay, producing wedge-shaped cuneiform. This development made writing quicker and easier, especially when writing on soft clay. By adjusting the relative position of the stylus to the tablet, the writer could use a single tool to make a variety of impressions. For numbers, a round-tipped stylus was initially used, until the wedge-tipped stylus was generalized. The direction of writing was from top-to-bottom and right-to-left. Cuneiform clay tablets could be fired in kilns to bake them hard, and so provide a permanent record, or they could be left moist and recycled if permanence was not needed, so surviving cuneiform tablets have largely been preserved by accident.


title: Cuneiform

text: The script was also widely used on commemorative stelae and carved reliefs to record the achievements of the ruler in whose honor the monument had been erected. The spoken language included many homophones and near-homophones, and in the beginning, similar-sounding words such as "life" [til] and "arrow" [ti] were written with the same symbol. WIth the rise of the Akkadian language some signs gradually changed from being pictograms to syllabograms, most likely to make things clearer in writing. In that way, the sign for the word "arrow" would become the sign for the sound "ti".


title: Cuneiform

text: Words that sounded alike would have different signs; for instance, the syllable [ɡu] had fourteen different symbols.


title: Cuneiform

text: When the words had a similar meaning but very different sounds they were written with the same symbol. For instance 'tooth' [zu], 'mouth' [ka] and 'voice' [gu] were all written with the symbol for "voice". To be more accurate, scribes started adding to signs or combining two signs to define the meaning. They used either geometrical patterns or another cuneiform sign.


title: Cuneiform

text: As time went by, the cuneiform got very complex and the distinction between a pictogram and syllabogram became vague. Several symbols had too many meanings to permit clarity. Therefore, symbols were put together to indicate both the sound and the meaning of a compound. The word 'raven' [UGA] had the same logogram as the word 'soap' [NAGA], the name of a city [EREŠ], and the patron goddess of Eresh [NISABA]. Two phonetic complements were used to define the word [u] in front of the symbol and [gu] behind. Finally, the symbol for 'bird' [MUŠEN] was added to ensure proper interpretation.


title: Cuneiform

text: For unknown reasons, cuneiform pictographs, until then written vertically, were rotated 90° counterclockwise, in effect putting them on their side. This change first occurred slightly before the Akkadian period, at the time of the Uruk ruler Lugalzagesi (r. c. 2294–2270 BC). The vertical style remained for monumental purposes on stone stelas until the middle of the 2nd millennium.


title: Cuneiform

text: Written Sumerian was used as a scribal language until the first century AD. The spoken language died out between about 2100 and 1700 BC.


title: Cuneiform

text: The archaic cuneiform script was adopted by the Akkadian Empire from the 23rd century BC (short chronology). The Akkadian language being East Semitic, its structure was completely different from Sumerian. There was no way to use the Sumerian writing system as such, and the Akkadians found a practical solution in writing their language phonetically, using the corresponding Sumerian phonetic signs. Still, some of the Sumerian characters were retained for their pictorial value as well: for example the character for "sheep" was retained, but was now pronounced "immerū", rather than the Sumerian "udu-meš".


title: Cuneiform

text: The East Semitic languages employed equivalents for many signs that were distorted or abbreviated to represent new values because the syllabic nature of the script as refined by the Sumerians was not intuitive to Semitic speakers. From the beginning of the Middle Bronze Age (20th century BC), the script evolved to accommodate the various dialects of Akkadian: Old Akkadian, Babylonian and Assyrian. At this stage, the former pictograms were reduced to a high level of abstraction, and were composed of only five basic wedge shapes: horizontal, vertical, two diagonals and the "Winkelhaken" impressed vertically by the tip of the stylus. The signs exemplary of these basic wedges are:


title: Cuneiform

text: Except for the "Winkelhaken", which has no tail, the length of the wedges' tails could vary as required for sign composition.


title: Cuneiform

text: Signs tilted by about 45 degrees are called "tenû" in Akkadian, thus DIŠ is a vertical wedge and DIŠ "tenû" a diagonal one. If a sign is modified with additional wedges, this is called "gunû" or "gunification"; if signs are cross-hatched with additional "Winkelhaken", they are called "šešig"; if signs are modified by the removal of a wedge or wedges, they are called "nutillu".


title: Cuneiform

text: "Typical" signs have about five to ten wedges, while complex ligatures can consist of twenty or more (although it is not always clear if a ligature should be considered a single sign or two collated, but distinct signs); the ligature KAxGUR consists of 31 strokes.


title: Cuneiform

text: Most later adaptations of Sumerian cuneiform preserved at least some aspects of the Sumerian script. Written Akkadian included phonetic symbols from the Sumerian syllabary, together with logograms that were read as whole words. Many signs in the script were polyvalent, having both a syllabic and logographic meaning. The complexity of the system bears a resemblance to Old Japanese, written in a Chinese-derived script, where some of these Sinograms were used as logograms and others as phonetic characters.


title: Cuneiform

text: Elamite cuneiform was a simplified form of the Sumero-Akkadian cuneiform, used to write the Elamite language in the area that corresponds to modern Iran. Elamite cuneiform at times competed with other local scripts, Proto-Elamite and Linear Elamite. The earliest known Elamite cuneiform text is a treaty between Akkadians and the Elamites that dates back to 2200 BC. However, some believe it might have been in use since 2500 BC. The tablets are poorly preserved, so only limited parts can be read, but it is understood that the text is a treaty between the Akkad king Nāramsîn and Elamite ruler Hita, as indicated by frequent references like "Nāramsîn's friend is my friend, Nāramsîn's enemy is my enemy".


title: Cuneiform

text: The most famous Elamite scriptures and the ones that ultimately led to its decipherment are the ones found in the trilingual Behistun inscriptions, commissioned by the Achaemenid kings. The inscriptions, similar to that of the Rosetta Stone's, were written in three different writing systems. The first was Old Persian, which was deciphered in 1802 by Georg Friedrich Grotefend. The second, Babylonian cuneiform, was deciphered shortly after the Old Persian text. Because Elamite is unlike its neighboring Semitic languages, the script's decipherment was delayed until the 1840s. Even today, lack of sources and comparative materials hinder further research of Elamite.


title: Cuneiform

text: This "mixed" method of writing continued through the end of the Babylonian and Assyrian empires, although there were periods when "purism" was in fashion and there was a more marked tendency to spell out the words laboriously, in preference to using signs with a phonetic complement. Yet even in those days, the Babylonian syllabary remained a mixture of logographic and phonemic writing.


title: Cuneiform

text: Hittite cuneiform is an adaptation of the Old Assyrian cuneiform of c. 1800 BC to the Hittite language. When the cuneiform script was adapted to writing Hittite, a layer of Akkadian logographic spellings was added to the script, thus the pronunciations of many Hittite words which were conventionally written by logograms are now unknown.


title: Cuneiform

text: In the Iron Age (c. 10th to 6th centuries BC), Assyrian cuneiform was further simplified. The characters remained the same as those of Sumero-Akkadian cuneiforms, but the graphic design of each character relied more heavily on wedges and square angles, making them significantly more abstract. The pronunciation of the characters was replaced by that of the Assyrian dialect of the Akkadian language:


title: Cuneiform

text: From the 6th century, the Akkadian language was marginalized by Aramaic, written in the Aramaean alphabet, but Neo-Assyrian cuneiform remained in use in the literary tradition well into the times of the Parthian Empire (250 BC–226 AD). The last known cuneiform inscription, an astronomical text, was written in 75 AD. The ability to read cuneiform may have persisted until the third century AD.


title: Cuneiform

text: The complexity of cuneiforms prompted the development of a number of simplified versions of the script. Old Persian cuneiform was developed with an independent and unrelated set of simple cuneiform characters, by Darius the Great in the 5th century BC. Most scholars consider this writing system to be an independent invention because it has no obvious connections with other writing systems at the time, such as Elamite, Akkadian, Hurrian, and Hittite cuneiforms.


title: Cuneiform

text: It formed a semi-alphabetic syllabary, using far fewer wedge strokes than Assyrian used, together with a handful of logograms for frequently occurring words like "god" (), "king" () or "country" (). This almost purely alphabetical form of the cuneiform script (36 phonetic characters and 8 logograms), was specially designed and used by the early Achaemenid rulers from the 6th century BC down to the 4th century BC.


title: Cuneiform

text: Because of its simplicity and logical structure, the Old Persian cuneiform script was the first to be deciphered by modern scholars, starting with the accomplishments of Georg Friedrich Grotefend in 1802. Various ancient bilingual or trilingual inscriptions then permitted to decipher the other, much more complicated and more ancient scripts, as far back as to the 3rd millennium Sumerian script.


title: Cuneiform

text: Ugaritic was written using the Ugaritic alphabet, a standard Semitic style alphabet (an "abjad") written using the cuneiform method.


title: Cuneiform

text: Between half a million and two million cuneiform tablets are estimated to have been excavated in modern times, of which only approximately 30,000–100,000 have been read or published. The British Museum holds the largest collection (approx. 130,000 tablets), followed by the Vorderasiatisches Museum Berlin, the Louvre, the Istanbul Archaeology Museums, the National Museum of Iraq, the Yale Babylonian Collection (approx. 40,000), and Penn Museum. Most of these have "lain in these collections for a century without being translated, studied or published", as there are only a few hundred qualified cuneiformists in the world.


title: Cuneiform

text: For centuries, travelers to Persepolis, located in Iran, had noticed carved cuneiform inscriptions and were intrigued. Attempts at deciphering Old Persian cuneiform date back to Arabo-Persian historians of the medieval Islamic world, though these early attempts at decipherment were largely unsuccessful.


title: Cuneiform

text: In the 15th century, the Venetian Giosafat Barbaro explored ancient ruins in the Middle East and came back with news of a very odd writing he had found carved on the stones in the temples of Shiraz and on many clay tablets.


title: Cuneiform

text: Antonio de Gouvea, a professor of theology, noted in 1602 the strange writing he had seen during his travels a year earlier in Persia. In 1625, the Roman traveler Pietro Della Valle, who had sojourned in Mesopotamia between 1616 and 1621, brought to Europe copies of characters he had seen in Persepolis and inscribed bricks from Ur and the ruins of Babylon. The copies he made, the first that reached circulation within Europe, were not quite accurate, but Della Valle understood that the writing had to be read from left to right, following the direction of wedges. However, he did not attempt to decipher the scripts.


title: Cuneiform

text: Englishman Sir Thomas Herbert, in the 1638 edition of his travel book "Some Yeares Travels into Africa & Asia the Great", reported seeing at Persepolis carved on the wall "a dozen lines of strange characters...consisting of figures, obelisk, triangular, and pyramidal" and thought they resembled Greek. In the 1677 edition he reproduced some and thought they were 'legible and intelligible' and therefore decipherable. He also guessed, correctly, that they represented not letters or hieroglyphics but words and syllables, and were to be read from left to right. Herbert is rarely mentioned in standard histories of the decipherment of cuneiform.


title: Cuneiform

text: In 1700 Thomas Hyde first called the inscriptions "cuneiform", but deemed that they were no more than decorative friezes.


title: Cuneiform

text: Proper attempts at deciphering Old Persian cuneiform started with faithful copies of cuneiform inscriptions, which first became available in 1711 when duplicates of Darius's inscriptions were published by Jean Chardin.


title: Cuneiform

text: Carsten Niebuhr brought very complete and accurate copies of the inscriptions at Persepolis to Europe, published in 1767 in "Reisebeschreibungen nach Arabien" ("Account of travels to Arabia and other surrounding lands"). The set of characters that would later be known as Old Persian cuneiform, was soon perceived as being the simplest of the three types of cuneiform scripts that had been encountered, and because of this was understood as a prime candidate for decipherment (the two other, older and more complicated scripts were Elamite and Babylonian). Niebuhr identified that there were only 42 characters in the simpler category of inscriptions, which he named "Class I", and affirmed that this must therefore be an alphabetic script.


title: Cuneiform

text: At about the same time, Anquetil-Duperron came back from India, where he had learnt Pahlavi and Persian under the Parsis, and published in 1771 a translation of the "Zend Avesta", thereby making known Avestan, one of the ancient Iranian languages. With this basis, Antoine Isaac Silvestre de Sacy was able to start the study of Middle Persian in 1792–93, during the French Revolution, and he realized that the inscriptions of Naqsh-e Rostam had a rather stereotyped structure on the model: "Name of the King, the Great King, the King of Iran and Aniran, son of N., the Great King, etc...". He published his results in 1793 in "Mémoire sur diverses antiquités de la Perse".


title: Cuneiform

text: In 1798, Oluf Gerhard Tychsen made the first study of the inscriptions of Persepolis copied by Niebuhr. He discovered that series of characters in the Persian inscriptions were divided from one another by an oblique wedge () and that these must be individual words. He also found that a specific group of seven letters () was recurring in the inscriptions, and that they had a few recurring terminations of three to four letters. However, Tychsen mistakenly attributed the texts to Arsacid kings, and therefore was unable to make further progress.


title: Cuneiform

text: Friedrich Münter Bishop of Copenhagen improved over the work of Tychsen, and proved that the inscriptions must belong to the age of Cyrus and his successors, which led to the suggestion that the inscriptions were in the Old Persian language and probably mentioned Achaemenid kings. He suggested that the long word appearing with high frequency and without any variation towards the beginning of each inscription () must correspond to the word "King", and that repetitions of this sequence must mean "King of Kings". He correctly guessed that the sequence must be pronounced "kh-sha-a-ya-th-i-ya", a word of the same root as the Avestan "xšaΘra-" and the Sanskrit "kṣatra-" meaning "power" and "command", and now known to be pronounced "xšāyaθiya" in Old Persian.


title: Cuneiform

text: By 1802 Georg Friedrich Grotefend conjectured that, based on the known inscriptions of much later rulers (the Pahlavi inscriptions of the Sassanid kings), a king's name is often followed by "great king, king of kings" and the name of the king's father. This understanding of the structure of monumental inscriptions in Old Persian was based on the work of Anquetil-Duperron, who had studied Old Persian through the Zoroastrian Avestas in India, and Antoine Isaac Silvestre de Sacy, who had decrypted the monumental Pahlavi inscriptions of the Sassanid kings.


title: Cuneiform

text: Looking at the length of the character sequences in the Niebuhr inscriptions 1 & 2, and comparing with the names and genealogy of the Achaemenid kings as known from the Greeks, also taking into account the fact that the father of one of the rulers in the inscriptions didn't have the attribute "king", he made the correct guess that this could be no other than Darius the Great, his father Hystaspes who was not a king, and his son the famous Xerxes. In Persian history around the time period the inscriptions were expected to be made, there were only two instances where a ruler came to power without being a previous king's son. They were Darius the Great and Cyrus the Great, both of whom became emperor by revolt. The deciding factors between these two choices were the names of their fathers and sons. Darius's father was Hystaspes and his son was Xerxes, while Cyrus' father was Cambyses I and his son was Cambyses II. Within the text, the father and son of the king had different groups of symbols for names so Grotefend assumed that the king must have been Darius.


title: Cuneiform

text: These connections allowed Grotefend to figure out the cuneiform characters that are part of Darius, Darius's father Hystaspes, and Darius's son Xerxes. He equated the letters with the name "d-a-r-h-e-u-sh" for Darius, as known from the Greeks. This identification was correct, although the actual Persian spelling was "da-a-ra-ya-va-u-sha", but this was unknown at the time. Grotefend similarly equated the sequence with "kh-sh-h-e-r-sh-e" for Xerxes, which again was right, but the actual Old Persian transcription was "wsa-sha-ya-a-ra-sha-a". Finally, he matched the sequence of the father who was not a king with Hystaspes, but again with the supposed Persian reading of "g-o-sh-t-a-s-p", rather than the actual Old Persian "vi-i-sha-ta-a-sa-pa".


title: Cuneiform

text: By this method, Grotefend had correctly identified each king in the inscriptions, but his identification of the value of individual letters was still quite defective, for want of a better understanding of the Old Persian language itself. Grotefend only identified correctly eight letters among the thirty signs he had collated. However groundbreaking, this inductive method failed to convince academics, and the official recognition of his work was denied for nearly a generation. Although Grotefend's Memoir was presented to the Göttingen Academy of Sciences and Humanities on September 4, 1802, the academy refused to publish it; it was subsequently published in Heeren's work in 1815, but was overlooked by most researchers at the time.


title: Cuneiform

text: It was only in 1823 that Grotefend's discovery was confirmed, when the French philologist Champollion, who had just deciphered Egyptian hieroglyphs, was able to read the Egyptian dedication of a quadrilingual hieroglyph-cuneiform inscription on an alabaster vase in the Cabinet des Médailles, the Caylus vase. The Egyptian inscription on the vase was in the name of King Xerxes I, and the orientalist Antoine-Jean Saint-Martin, who accompanied Champollion, was able to confirm that the corresponding words in the cuneiform script were indeed the words which Grotefend had identified as meaning "king" and "Xerxes" through guesswork. In effect the decipherment of Egyptian hieroglyphs was thus decisive in confirming the first steps of the decipherment of the cuneiform script.


title: Cuneiform

text: In 1836, the eminent French scholar Eugène Burnouf discovered that the first of the inscriptions published by Niebuhr contained a list of the satrapies of Darius. With this clue in his hand, he identified and published an alphabet of thirty letters, most of which he had correctly deciphered.


title: Cuneiform

text: A month earlier, a friend and pupil of Burnouf's, Professor Christian Lassen of Bonn, had also published his own work on "The Old Persian Cuneiform Inscriptions of Persepolis". He and Burnouf had been in frequent correspondence, and his claim to have independently detected the names of the satrapies, and thereby to have fixed the values of the Persian characters, was consequently fiercely attacked. According to Sayce, whatever his obligations to Burnouf may have been, Lassen's


title: Cuneiform

text: Meanwhile, in 1835 Henry Rawlinson, a British East India Company army officer, visited the Behistun Inscriptions in Persia. Carved in the reign of King Darius of Persia (522–486 BC), they consisted of identical texts in the three official languages of the empire: Old Persian, Babylonian and Elamite. The Behistun inscription was to the decipherment of cuneiform what the Rosetta Stone (discovered in 1799) was to the decipherment of Egyptian hieroglyphs in 1822.


title: Cuneiform

text: Rawlinson successfully completed the decipherment of Old Persian cuneiform. In 1837, he finished his copy of the Behistun inscription, and sent a translation of its opening paragraphs to the Royal Asiatic Society. Before his article could be published, however, the works of Lassen and Burnouf reached him, necessitating a revision of his article and the postponement of its publication. Then came other causes of delay. In 1847, the first part of the Rawlinson's Memoir was published; the second part did not appear until 1849. The task of deciphering Old Persian cuneiform texts was virtually accomplished.


title: Cuneiform

text: After translating Old Persian, Rawlinson and, working independently of him, the Irish Assyriologist Edward Hincks, began to decipher the other cuneiform scripts. The decipherment of Old Persian was thus notably instrumental to the decipherment of Elamite and Babylonian, thanks to the trilingual Behistun inscription.


title: Cuneiform

text: The decipherment of Babylonian ultimately led to the decipherment of Akkadian, which was a close predecessor of Babylonian. The actual techniques used to decipher the Akkadian language have never been fully published; Hincks described how he sought the proper names already legible in the deciphered Persian while Rawlinson never said anything at all, leading some to speculate that he was secretly copying Hincks. They were greatly helped by the excavations of the French naturalist Paul Émile Botta and English traveler and diplomat Austen Henry Layard of the city of Nineveh from 1842. Among the treasures uncovered by Layard and his successor Hormuzd Rassam were, in 1849 and 1851, the remains of two libraries, now mixed up, usually called the Library of Ashurbanipal, a royal archive containing tens of thousands of baked clay tablets covered with cuneiform inscriptions.


title: Cuneiform

text: By 1851, Hincks and Rawlinson could read 200 Akkadian signs. They were soon joined by two other decipherers: young German-born scholar Julius Oppert, and versatile British Orientalist William Henry Fox Talbot. In 1857, the four men met in London and took part in a famous experiment to test the accuracy of their decipherments. Edwin Norris, the secretary of the Royal Asiatic Society, gave each of them a copy of a recently discovered inscription from the reign of the Assyrian emperor Tiglath-Pileser I. A jury of experts was impaneled to examine the resulting translations and assess their accuracy. In all essential points, the translations produced by the four scholars were found to be in close agreement with one another. There were, of course, some slight discrepancies. The inexperienced Talbot had made a number of mistakes, and Oppert's translation contained a few doubtful passages which the jury politely ascribed to his unfamiliarity with the English language. But Hincks' and Rawlinson's versions corresponded remarkably closely in many respects. The jury declared itself satisfied, and the decipherment of Akkadian cuneiform was adjudged a "fait accompli".


title: Cuneiform

text: Finally, Sumerian, the oldest language with a script, was also deciphered through the analysis of ancient Akkadian-Sumerian dictionaries and bilingual tablets, as Sumerian long remained a literary language in Mesopotamia, which was often re-copied, translated and commented in numerous Babylonian tablets.


title: Cuneiform

text: In the early days of cuneiform decipherment, the reading of proper names presented the greatest difficulties. However, there is now a better understanding of the principles behind the formation and the pronunciation of the thousands of names found in historical records, business documents, votive inscriptions, literary productions, and legal documents. The primary challenge was posed by the characteristic use of old Sumerian non-phonetic logograms in other languages that had different pronunciations for the same symbols. Until the exact phonetic reading of many names was determined through parallel passages or explanatory lists, scholars remained in doubt or had recourse to conjectural or provisional readings. However, in many cases, there are variant readings, the same name being written phonetically (in whole or in part) in one instance and logographically in another.


title: Cuneiform

text: Cuneiform has a specific format for transliteration. Because of the script's polyvalence, transliteration requires certain choices of the transliterating scholar, who must decide in the case of each sign which of its several possible meanings is intended in the original document. For example, the sign dingir in a Hittite text may represent either the Hittite syllable "an" or may be part of an Akkadian phrase, representing the syllable "il", it may be a Sumerogram, representing the original Sumerian meaning, 'god' or the determinative for a deity. In transliteration, a different rendition of the same glyph is chosen depending on its role in the present context.


title: Cuneiform

text: Therefore, a text containing DINGIR and MU in succession could be construed to represent the words "ana", "ila", god + "a" (the accusative case ending), god + water, or a divine name "A" or Water. Someone transcribing the signs would make the decision how the signs should be read and assemble the signs as "ana", "ila", "Ila" ("god"+accusative case), etc. A transliteration of these signs, however, would separate the signs with dashes "il-a", "an-a", "DINGIR-a" or "a". This is still easier to read than the original cuneiform, but now the reader is able to trace the sounds back to the original signs and determine if the correct decision was made on how to read them. A transliterated document thus presents the reading preferred by the transliterating scholar as well as an opportunity to reconstruct the original text.


title: Cuneiform

text: There are differing conventions for transliterating Sumerian, Akkadian (Babylonian), and Hittite (and Luwian) cuneiform texts. One convention that sees wide use across the different fields is the use of acute and grave accents as an abbreviation for homophone disambiguation. Thus, "u" is equivalent to "u", the first glyph expressing phonetic "u". An acute accent, "ú", is equivalent to the second, "u", and a grave accent "ù" to the third, "u" glyph in the series (while the sequence of numbering is conventional but essentially arbitrary and subject to the history of decipherment). In Sumerian transliteration, a multiplication sign ('×') is used to indicate typographic ligatures. As shown above, signs "as such" are represented in capital letters, while the specific reading selected in the transliteration is represented in small letters. Thus, capital letters can be used to indicate a so-called Diri compound – a sign sequence that has, in combination, a reading different from the sum of the individual constituent signs (for example, the compound IGI.A – "eye" + "water" – has the reading "imhur", meaning "foam"). In a Diri compound, the individual signs are separated with dots in transliteration. Capital letters may also be used to indicate a Sumerogram (for example, KÙ.BABBAR – Sumerian for "silver" – being used with the intended Akkadian reading "kaspum", "silver"), an Akkadogram, or simply a sign sequence of whose reading the editor is uncertain. Naturally, the "real" reading, if it is clear, will be presented in small letters in the transliteration: IGI.A will be rendered as imhur.


title: Cuneiform

text: Since the Sumerian language has only been widely known and studied by scholars for approximately a century, changes in the accepted reading of Sumerian names have occurred from time to time. Thus the name of a king of Ur, read "Ur-Bau" at one time, was later read as "Ur-Engur", and is now read as Ur-Nammu or Ur-Namma; for Lugal-zage-si, a king of Uruk, some scholars continued to read "Ungal-zaggisi"; and so forth. Also, with some names of the older period, there was often uncertainty whether their bearers were Sumerians or Semites. If the former, then their names could be assumed to be read as Sumerian, while, if they were Semites, the signs for writing their names were probably to be read according to their Semitic equivalents, though occasionally Semites might be encountered bearing genuine Sumerian names. There was also doubt whether the signs composing a Semite's name represented a phonetic reading or a logographic compound. Thus, e.g. when inscriptions of a Semitic ruler of Kish, whose name was written "Uru-mu-ush", were first deciphered, that name was first taken to be logographic because "uru mu-ush" could be read as "he founded a city" in Sumerian, and scholars accordingly retranslated it back to the original Semitic as "Alu-usharshid". It was later recognized that the URU sign can also be read as "rí" and that the name is that of the Akkadian king Rimush.


title: Cuneiform

text: The table below shows signs used for simple syllables of the form CV or VC. As used for the Sumerian language, the cuneiform script was in principle capable of distinguishing at least 16 consonants, transliterated as


title: Cuneiform

text: The Akkadian language had no use for "g̃" or "ř" but needed to distinguish its emphatic series, "q, ṣ, ṭ", adopting various "superfluous" Sumerian signs for the purpose (e.g. "qe"=KIN, "qu"=KUM, "qi"=KIN, "ṣa"=ZA, "ṣe"=ZÍ, "ṭur"=DUR etc.)


title: Cuneiform

text: The Sumerian cuneiform script had on the order of 1,000 distinct signs (or about 1,500 if variants are included). This number was reduced to about 600 by the 24th century BC and the beginning of Akkadian records. Not all Sumerian signs are used in Akkadian texts, and not all Akkadian signs are used in Hittite.


title: Cuneiform

text: A. Falkenstein (1936) lists 939 signs used in the earliest period (late Uruk, 34th to 31st centuries). (See #Bibliography for the works mentioned in this paragraph.)


title: Cuneiform

text: With an emphasis on "Sumerian" forms, Deimel (1922) lists 870 signs used in the Early Dynastic II period (28th century, "Liste der archaischen Keilschriftzeichen" or "LAK") and for the Early Dynastic IIIa period (26th century, "Šumerisches Lexikon" or "ŠL").


title: Cuneiform

text: and Mittermayer and Attinger (2006, " Altbabylonische Zeichenliste der Sumerisch-Literarischen Texte" or "aBZL") list 480 Sumerian forms, written in Isin-Larsa and Old Babylonian times. Regarding "Akkadian" forms, the standard handbook for many years was Borger (1981, "Assyrisch-Babylonische Zeichenliste" or "ABZ") with 598 signs used in Assyrian/Babylonian writing, recently superseded by Borger (2004, "Mesopotamisches Zeichenlexikon" or "MesZL") with an expansion to 907 signs, an extension of their Sumerian readings and a new numbering scheme.


title: Cuneiform

text: Signs used in Hittite cuneiform are listed by Forrer (1922), Friedrich (1960) and Rüster and Neu (1989, "Hethitisches Zeichenlexikon" or "HZL"). The HZL lists a total of 375 signs, many with variants (for example, 12 variants are given for number 123 "EGIR").


title: Cuneiform

text: The Sumerians used a numerical system based on 1, 10, and 60. The way of writing a number like 70 would be the sign for 60 and the sign for 10 right after.


title: Cuneiform

text: Cuneiform script was used in many ways in ancient Mesopotamia. Besides the well known clay tablets and stone inscriptions cuneiform was also written on wax boards, which one example from the 8th century BC was found at Nimrud. The wax contained toxic amounts of arsenic. It was used to record laws, like the Code of Hammurabi. It was also used for recording maps, compiling medical manuals, and documenting religious stories and beliefs, among other uses. In particular it is thought to have been used to prepare surveying data and draft inscriptions for Kassite stone kudurru. Studies by Assyriologists like Claus Wilcke and Dominique Charpin suggest that cuneiform literacy was not reserved solely for the elite but was common for average citizens.


title: Cuneiform

text: According to the "Oxford Handbook of Cuneiform Culture", cuneiform script was used at a variety of literacy levels: average citizens needed only a basic, functional knowledge of cuneiform script to write personal letters and business documents. More highly literate citizens put the script to more technical use, listing medicines and diagnoses and writing mathematical equations. Scholars held the highest literacy level of cuneiform and mostly focused on writing as a complex skill and an art form.


title: Cuneiform

text: As of version 8.0, the following ranges are assigned to the Sumero-Akkadian Cuneiform script in the Unicode Standard:


title: Cuneiform

text: The final proposal for Unicode encoding of the script was submitted by two cuneiform scholars working with an experienced Unicode proposal writer in June 2004.


title: Cuneiform

text: The base character inventory is derived from the list of Ur III signs compiled by the Cuneiform Digital Library Initiative of UCLA based on the inventories of Miguel Civil, Rykle Borger (2003) and Robert Englund. Rather than opting for a direct ordering by glyph shape and complexity, according to the numbering of an existing catalog, the Unicode order of glyphs was based on the Latin alphabetic order of their "last" Sumerian transliteration as a practical approximation. Once in Unicode, glyphs can be automatically processed into segmented transliterations.


title: Cyanide poisoning

text: Cyanide poisoning is poisoning that results from exposure to any of a number of forms of cyanide. Early symptoms include headache, dizziness, fast heart rate, shortness of breath, and vomiting. This phase may then be followed by seizures, slow heart rate, low blood pressure, loss of consciousness, and cardiac arrest. Onset of symptoms usually occurs within a few minutes. Some survivors have long-term neurological problems.


title: Cyanide poisoning

text: Toxic cyanide-containing compounds include hydrogen cyanide gas and a number of cyanide salts. Poisoning is relatively common following breathing in smoke from a house fire. Other potential routes of exposure include workplaces involved in metal polishing, certain insecticides, the medication sodium nitroprusside, and certain seeds such as those of apples and apricots. Liquid forms of cyanide can be absorbed through the skin. Cyanide ions interfere with cellular respiration, resulting in the body's tissues being unable to use oxygen.


title: Cyanide poisoning

text: Diagnosis is often difficult. It may be suspected in a person following a house fire who has a decreased level of consciousness, low blood pressure, or high lactic acid. Blood levels of cyanide can be measured but take time. Levels of 0.5–1 mg/L are mild, 1–2 mg/L are moderate, 2–3 mg/L are severe, and greater than 3 mg/L generally result in death.


title: Cyanide poisoning

text: If exposure is suspected, the person should be removed from the source of exposure and decontaminated. Treatment involves supportive care and giving the person 100% oxygen. Hydroxocobalamin (vitamin B12) appears to be useful as an antidote and is generally first-line. Sodium thiosulphate may also be given. Historically cyanide has been used for mass suicide and by the Nazis for genocide.


title: Cyanide poisoning

text: If hydrogen cyanide is inhaled it can cause a coma with seizures, apnea, and cardiac arrest, with death following in a matter of seconds. At lower doses, loss of consciousness may be preceded by general weakness, dizziness, headaches, vertigo, confusion, and perceived difficulty in breathing. At the first stages of unconsciousness, breathing is often sufficient or even rapid, although the state of the person progresses towards a deep coma, sometimes accompanied by pulmonary edema, and finally cardiac arrest. A cherry red skin color that darkens may be present as the result of increased venous hemoglobin oxygen saturation. Despite the similar name, cyanide does not directly cause cyanosis. A fatal dose for humans can be as low as 1.5 mg/kg body weight. Other sources claim a lethal dose is 1–3 mg per kg body weight for vertebrates.


title: Cyanide poisoning

text: Exposure to lower levels of cyanide over a long period (e.g., after use of improperly processed cassava roots, which are a primary food source in tropical Africa) results in increased blood cyanide levels, which can result in weakness and a variety of symptoms, including permanent paralysis, nervous lesions, hypothyroidism, and miscarriages. Other effects include mild liver and kidney damage.


title: Cyanide poisoning

text: Cyanide poisoning can result from the ingestion of cyanide salts; imbibing pure liquid prussic acid; skin absorption of prussic acid; intravenous infusion of nitroprusside for hypertensive crisis; or the inhalation of hydrogen cyanide gas. The last typically occurs through one of three mechanisms:


title: Cyanide poisoning

text: As a potential harm-reduction factor, Vitamin B12, in the form of hydroxocobalamin (also spelled hydroxycobalamin), might reduce the negative effects of chronic exposure; whereas, a deficiency might worsen negative health effects following exposure to cyanide.


title: Cyanide poisoning

text: Cyanide is a potent cytochrome "c" oxidase (COX, a.k.a. Complex IV) inhibitor. As such, cyanide poisoning is a form of histotoxic hypoxia, because it interferes with oxidative phosphorylation.


title: Cyanide poisoning

text: Specifically, cyanide binds to the heme a3-CuB binuclear center of COX (and thus is a non-competitive inhibitor of it). This prevents electrons passing through COX from being transferred to O, which not only blocks the mitochondrial electron transport chain but also interferes with the pumping of a proton out of the mitochondrial matrix which would otherwise occur at this stage. Therefore, cyanide interferes not only with aerobic respiration but also with the ATP synthesis pathway it facilitates, owing to the close relationship between those two processes.


title: Cyanide poisoning

text: One antidote for cyanide poisoning, nitrite (i.e. via amyl nitrite), works by converting ferrohemoglobin to ferrihemoglobin, which can then compete with COX for free cyanide (as the cyanide will bind to the iron in its heme groups instead). Ferrihemoglobin cannot carry oxygen, but the amount of ferrihemoglobin that can be formed without impairing oxygen transport is much greater than the amount of COX in the body.


title: Cyanide poisoning

text: Cyanide is a broad-spectrum poison because the reaction it inhibits is essential to aerobic metabolism; COX is found in many forms of life. However, susceptibility to cyanide is far from uniform across affected species; for instance, plants have an alternative electron transfer pathway available that passes electrons directly from ubiquinone to O, which confers cyanide resistance by bypassing COX.


title: Cyanide poisoning

text: Lactate is produced by anaerobic glycolysis when oxygen concentration becomes too low for the normal aerobic respiration pathway. Cyanide poisoning inhibits aerobic respiration and therefore increases anaerobic glycolysis which causes a rise of lactate in the plasma. A lactate concentration above 10 mmol per liter is an indicator of cyanide poisoning, as defined by the presence of a blood cyanide concentration above 40 µmol per liter. Lactate levels greater than 6 mmol/L after reported or strongly suspected pure cyanide poisoning, such as cyanide-containing smoke exposure, suggests significant cyanide exposure.


title: Cyanide poisoning

text: Methods of detection include colorimetric assays such as the Prussian blue test, the pyridine-barbiturate assay, also known as the "Conway diffusion method" and the taurine fluorescence-HPLC but like all colorimetric assays these are prone to false positives. Lipid peroxidation resulting in "TBARS," an artifact of heart attack produces dialdehydes that cross-react with the pyridine-barbiturate assay. Meanwhile, the taurine-fluorescence-HPLC assay used for cyanide detection is identical to the assay used to detect glutathione in spinal fluid.


title: Cyanide poisoning

text: Cyanide and thiocyanate assays have been run with mass spectrometry (LC/MS/MS), which are considered specific tests. Since cyanide has a short half-life, the main metabolite, thiocyanate is typically measured to determine exposure. Other methods of detection include the identification of plasma lactate.


title: Cyanide poisoning

text: Decontamination of people exposed to hydrogen cyanide gas only requires removal of the outer clothing and the washing of their hair. Those exposed to liquids or powders generally require full decontamination.


title: Cyanide poisoning

text: The International Programme on Chemical Safety issued a survey (IPCS/CEC Evaluation of Antidotes Series) that lists the following antidotal agents and their effects: oxygen, sodium thiosulfate, amyl nitrite, sodium nitrite, 4-dimethylaminophenol, hydroxocobalamin, and dicobalt edetate ('Kelocyanor'), as well as several others. Other commonly-recommended antidotes are 'solutions A and B' (a solution of ferrous sulfate in aqueous citric acid, and aqueous sodium carbonate, respectively) and amyl nitrite.


title: Cyanide poisoning

text: The United States standard cyanide antidote kit first uses a small inhaled dose of amyl nitrite, followed by intravenous sodium nitrite, followed by intravenous sodium thiosulfate. Hydroxocobalamin was approved for use in the US in late 2006 and is available in Cyanokit antidote kits. Sulfanegen TEA, which could be delivered to the body through an intra-muscular (IM) injection, detoxifies cyanide and converts the cyanide into thiocyanate, a less toxic substance. Alternative methods of treating cyanide intoxication are used in other countries.


title: Cyanide poisoning

text: The Irish Health and Safety Executive (HSE) has recommended against the use of solutions A and B because of their limited shelf life, potential to cause iron poisoning, and limited applicability (effective only in cases of cyanide ingestion, whereas the main modes of poisoning are inhalation and skin contact). The HSE has also questioned the usefulness of amyl nitrite due to storage/availability problems, risk of abuse, and lack of evidence of significant benefits. It also states that the availability of kelocyanor at the workplace may mislead doctors into treating a patient for cyanide poisoning when this is an erroneous diagnosis. The HSE no longer recommends a particular cyanide antidote.


title: Cyanide poisoning

text: The República Cromañón nightclub fire broke out in Buenos Aires, Argentina on 30 December 2004, killing 194 people and leaving at least 1,492 injured. Most of the victims died from inhaling poisonous gases, and carbon monoxide. After the fire, the technical institution INTI found that the level of toxicity due to the materials and volume of the building was 225 ppm of cyanide in the air. A lethal dose for rats is between 150 ppm and 220 ppm, meaning the air in the building was highly toxic.


title: Cyanide poisoning

text: On 5 December 2009, a fire in the night club Lame Horse (Khromaya Loshad) in the Russian city of Perm took the lives of 156 people. Fatalities consisted of 111 people at the site and 45 later in hospitals. One of the main causes of death was poisoning from cyanide and other toxic gases released by the burning of plastic and polyurethane foam used in the construction of club interiors. Taking into account the number of deaths, this was the largest fire in post-Soviet Russia.


title: Cyanide poisoning

text: On 27 January 2013, a fire at the Kiss nightclub in the city of Santa Maria, in the south of Brazil, caused the poisoning of hundreds of young people by cyanide released by the combustion of soundproofing foam made with polyurethane. By March 2013, 245 fatalities were confirmed.


title: Cyanide poisoning

text: In early 1942, Zyklon B, which contains hydrogen cyanide, emerged as the preferred killing tool of Nazi Germany for use in extermination camps during the Holocaust. The chemical was used to murder roughly one million people in gas chambers installed in extermination camps at Auschwitz-Birkenau, Majdanek, and elsewhere. Most of the people who were murdered were Jews, and by far the majority of these murders took place at Auschwitz. Zyklon B was supplied to concentration camps at Mauthausen, Dachau, and Buchenwald by the distributor Heli, and to Auschwitz and Majdanek by Testa. Camps also occasionally bought Zyklon B directly from the manufacturers. Of the 729 tonnes of Zyklon B sold in Germany in 1942–44, 56 tonnes (about eight percent of domestic sales) were sold to concentration camps. Auschwitz received 23.8 tonnes, of which six tonnes were used for fumigation. The remainder was used in the gas chambers or lost to spoilage (the product had a stated shelf life of only three months). Testa conducted fumigations for the Wehrmacht and supplied them with Zyklon B. They also offered courses to the SS in the safe handling and use of the material for fumigation purposes. In April 1941, the German agriculture and interior ministries designated the SS as an authorized applier of the chemical, and thus they were able to use it without any further training or governmental oversight.


title: Cyanide poisoning

text: Hydrogen cyanide gas has been used for judicial execution in some states of the United States, where cyanide was generated by reaction between potassium cyanide (or sodium cyanide) dropped into a compartment containing sulfuric acid, directly below the chair in the gas chamber.


title: Cyanide poisoning

text: Cyanide salts are sometimes used as fast-acting suicide devices. Cyanide reacts at a higher level with high stomach acidity.


title: Cyanide poisoning

text: Cobinamide is the final compound in the biosynthesis of cobalamin. It has greater affinity for the cyanide than cobalamin itself, which suggests that it could be a better option for emergency treatment.


title: Stryker

text: The Stryker is a family of eight-wheeled armored fighting vehicles derived from the Canadian LAV III. Stryker vehicles are produced by General Dynamics Land Systems-Canada (GDLS-C) for the United States Army in a plant in London, Ontario. It has four-wheel drive (8×4) and can be switched to all-wheel drive (8×8).


title: Stryker

text: The Stryker was conceived as a family of vehicles forming the backbone of a new medium-weight brigade combat team (BCT) that was to strike a balance between heavy armor and infantry. The service launched the Interim Armored Vehicle competition, and in 2000, the service selected the LAV III proposed by GDLS and General Motors Defense. The service named this family of vehicles the "Stryker".


title: Stryker

text: In October 1999, General Eric Shinseki, then U.S. Army Chief of Staff, outlined a transformation plan for the Army that would allow it to adapt to post–Cold War conditions. The plan, named "Objective Force", would have the army adopt a flexible doctrine that would allow it to deploy quickly, and be equipped for a variety of operations. An early phase of the plan called for the introduction of an Interim Armored Vehicle (IAV), which was intended to fill the capability gap between heavier and heavily armed, but not easily deployable, vehicles, such as the M2 Bradley, and easily deployable vehicles that are lightly armed and protected, such as the Humvee. The IAV was intended as an interim vehicle until light air-mobile vehicles from the Future Combat Systems Manned Ground Vehicles program came online, none of which did before the program was canceled. Nearly a year and a half behind schedule, the General Motors Defense–General Dynamics Land Systems team was awarded the $8 billion contract in November 2000 to produce 2,131 vehicles of a variant of the Canadian LAV III for equipping six rapid deployment Brigade Combat Teams by 2008. United Defense protested the contract award in December, saying their proposal cost less than half that of General Motors–General Dynamics. The General Accounting Office rejected the protest in April 2001.


title: Stryker

text: U.S. Assistant Secretary of the Army Paul J. Hoeper called the IAV "the best off-the-shelf equipment available in the world in this class", though many in the Army openly wondered whether the vehicles were underclassed compared to the vehicles they might face in battle. In February 2002, the Army formally renamed the IAV as the "Stryker" after two unrelated U.S. soldiers who posthumously received the Medal of Honor: Private First Class Stuart S. Stryker, who died in World War II, and Specialist Four Robert F. Stryker, who died in the Vietnam War.


title: Stryker

text: In 2002, as the Stryker program faced criticism from lawmakers, including former Congressman Newt Gingrich, Pentagon officials mulled reducing the number of planned Stryker Brigade Combat Teams from six to three for a cost savings of $4.5 billion. In October, the Stryker's C-130 air mobility was demonstrated for lawmakers at Andrews Air Force Base. At the Association of the United States Army, Army Chief of Staff Eric Shinseki defended the six-brigade plan and boasted that the C-130 could carry a Stryker "every way but sideways".


title: Stryker

text: Four brigades were funded in the DoD's budget proposal for fiscal year 2004, with Secretary of Defense Donald Rumsfeld deferring a decision on two additional until July 2003. In May, the Army readied the Stryker for initial operating capability at Fort Polk. "The New York Times" noted the swiftness with which the program had proceeded from its inception in 1999.


title: Stryker

text: In November 2003, 311 Stryker vehicles were deployed in the Iraq War, where they saw mixed success. Never designed for front-line combat, the vehicles were nevertheless pressed into counterinsurgency roles for which there was an unmet need.


title: Stryker

text: Unexpectedly fierce resistance by insurgents prompted field upgrades to the vehicle's armor. To counter the threat of rocket-propelled grenades, General Dynamics developed slat armor, which added 5,000 lb (2,270 kg) to the vehicle weight. The upgrades came at a cost: in addition to hindering mobility in the field, the additional weight ruled out transporting the vehicle by C-130.


title: Stryker

text: In February 2005, Army Chief of Staff Gen. Peter J. Schoomaker told the House Armed Services Committee that "we're absolutely enthusiastic about what the Stryker has done." However, a leaked U.S. Army report from December 2004 said the Stryker was "effective and survivable only with limitations for use in small-scale contingencies." The report, which drew from feedback from Stryker personnel in Mosul, described a litany of design flaws, and said the effectiveness of the vehicles was "getting worse, not better."


title: Stryker

text: The Stryker 105 mm M1128 Mobile Gun System (MGS) moved into low-rate initial production in 2005 for evaluation, and entered full production in 2007. General Dynamics Land Systems-Canada assembles the Stryker for the U.S. Army in a plant in London, Ontario.


title: Stryker

text: The vehicle is employed in Stryker Brigade Combat Teams, light and mobile units based on the brigade combat team doctrine that relies on vehicles connected by military CI (Command, Control, Communications, Computers, and Intelligence) networks.


title: Stryker

text: General Dynamics's Robotic Systems division was developing autonomous navigation for the Stryker and several other vehicles with a $237 million contract until the program was cut in July 2011. Tank Automotive Research, Development and Engineering Center (TARDEC) has also tested an active magneto rheological suspension, developed by MillenWorks for the Stryker, at the Yuma Proving Ground, which resulted in greater vehicle stability.


title: Stryker

text: As of 2011, over 1,000 Stryker vehicles have been rebuilt by Anniston Army Depot and returned to operations.


title: Stryker

text: Throughout its years in service, the Stryker has undergone various survivability upgrades and received "kit" applications designed to improve the vehicle's ability to withstand attacks.


title: Stryker

text: The US Army plans to improve its fleet of Stryker vehicles with the introduction of improved semi-active suspension, modifications reshaping the hull into a shallow V-shaped structure, to protect against improvised explosive devices (IEDs). Also included are additional armor for the sides, redesigned hatches to minimize gaps in the armor, blast-absorbent, mine-resistant seating, non-flammable tires, an upgrade to the remote weapon station that allows it to fire on the go, increased 500 ampere electrical generation, a new solid-state power distribution system and data bus, and the automotive and power plant systems improvements to support one-fourth greater gross vehicle weight. The upgraded V-hull will be part of the new StrykShield situational awareness kit, which will address many of these upgrades. Allegheny Technologies' ATI 500-MIL armor steel was designated the primary armored plating for the StrykShield package in 2008.


title: Stryker

text: The upgrade incorporating lessons learned from combat in Afghanistan is designated LAV-H and General Dynamics had a technology demonstrator displayed at the 2007 Association of the United States Army (AUSA) Exposition. In March 2010, it was reported that General Dynamics and Army were working to incorporate a double V-hull into the Stryker design. In July 2010 the Army awarded a $30 million contract to GDLS to start production of the new hull.


title: Stryker

text: On 9 March 2011, the Department of Defense's director of operational test and evaluations testified that the new V-hull design was "not suitable" for long missions in Afghanistan's terrain. The issues are due to the tight driver's compartment and difficulty releasing the seat to extract an incapacitated driver. General Dynamics stated these issues would be corrected before the deployment of the new Stryker version. The upgrade also added significant weight to the vehicle, which can cause it to sink into soft ground.


title: Stryker

text: In July 2011, 450 Double V-Hull (DVH) variants of the Stryker vehicle were ordered; the total was increased to 742 a few months later and then to 760 in 2012. DVH Strykers include a new hull configuration, increased armor, upgraded suspension and braking systems, wider tires, blast-attenuating seats, and a height management system.


title: Stryker

text: By August 2012, the Army's Stryker fleet included over 4,187 vehicles, with 10 flat-bottom variants and seven in double V-hull designs. In Afghanistan, it retained a 96 percent readiness rate. To upgrade the existing fleet, the Army has implemented an Engineering Change Proposal (ECP) program to provide a stronger engine, improved suspension, more on-board electrical power, and next-generation networking and computing technology. Phase 1 of the ECP includes an electrical power upgrade by replacing the extant 570 amp alternator with a higher current 910 amp alternator, replacing the existing 350 horsepower engine with a 450-horsepower engine, a stronger suspension system to improve mobility at higher weights, and an in-vehicle network to improve data and video sharing between crew stations and more secure and reliable data sharing between vehicle systems. On 28 May 2013, Kongsberg Integrated Tactical Systems was awarded a contract to supply the Driver's Situational Awareness Display (DSAD) and Commander's Situational Awareness Display (CSAD) for the Stryker ECP program, featuring an on-board processor and additional I/O ports for both data and video.


title: Stryker

text: As of January 2014, the U.S. Army had two Stryker Brigades that completed the DVH upgrade with a third brigade, the 2nd Brigade, 2nd Infantry Division at Joint Base Lewis–McChord, to be fully upgraded by the end of FY 2016. In mid-October 2014, the Army approved the procurement of DVH Strykers for a fourth Stryker brigade, with conversions to 360 vehicles to begin in FY 2017. The Strykers will also be the first to receive ECPs to handle the upgrades better than the previous three brigade vehicles, which increased weight, decreased mobility, and added a power burden; previous DVH-upgraded Strykers will get ECP enhancements when funding is available. ECP enhancements include a more robust 450 HP engine, a more powerful 910 amp power generator, a chassis upgrade to handle the new engine, and improvements to the vehicle's internal network. Upgrading the fourth brigade also kept the production line active through 2018, whereas deciding to upgrade after the line had closed would be more difficult and costly from reopening it. The upgrades of the engine and power generator, suspension, and DVH designate the vehicle the Stryker-A1. The Army plans to increase the lethality of Stryker ICVs by having half equipped with a 30 mm cannon and the other half given a Javelin anti-tank missile on the existing RWS in each brigade. By September 2020, half of the 2nd Brigade, 4th Infantry Division had fielded the third-generation Stryker DVHA1 variant.


title: Stryker

text: On 28 February 2018, the Army announced that Stryker vehicles would be modified with sensors and weapons to fulfill an interim Maneuver-Short-Range Air Defense (M-SHORAD) requirement. This is in response to a capability gap identified in Europe against Russian unmanned aerial vehicles (UAVs). With the previous focus on fighting in the Middle East, the U.S. Army had neglected SHORAD capabilities and in future conflicts it is feared they would not be able to rely on air dominance to counter enemy aircraft. In addition to deploying AN/TWQ-1 Avengers and fielding man-portable Stinger missiles, Strykers are to be upgraded to buy time to build a lasting mobile air defense solution. Because the unarmored Humvee-based Avenger lacks survivability and range to keep up with maneuver forces and hold off enemy aircraft in contested territory, four battalions totaling 144 Stryker SHORADs are planned, with the first battery of 12 systems fielded by 2020; the Stryker platform was chosen because it has better protection and in regards to size, weight and power considerations, especially for the possibility of integrating a directed energy weapon in the future. The first unit to be equipped with them will be the 4th Battalion, 5th Air Defense Artillery Regiment. The Army planned to select the weapons configuration to be fitted onto the vehicle by late 2018.


title: Stryker

text: In June 2018, the Army chose Leonardo DRS to supply the mission equipment package, which partnered with Moog Inc. to integrate the Reconfigurable Integrated-weapons Platform (RIwP) onto the vehicle. The system can be fitted with a Stinger pod and Longbow Hellfire missile rails and comes equipped with a 30 mm M230LF chain gun and the 7.62 mm M240 coaxial machine gun, as well as non-kinetic defeat capabilities and a RADA Electronic Industries onboard Multi-Mission Hemispheric Radar (MHR). The Army chose DRS because of the flexibility of the reconfigurable turret to allow for growth opportunities and alternate weapon options, it posed less intrusion to the existing vehicle platform, as they have a desire to keep the Stryker as common across the fleet as possible, and it provided increased protection as the crew can reload ammunition under armor. All 144 M-SHORAD systems are planned to be delivered by 2022. The turret can mount one four-shot Stinger pod or two Hellfire missiles on either side, and reloading of the M230LF and Stingers can be done through roof hatches giving partial protection. The system can act in a secondary anti-vehicle role, as the 30 mm cannon is larger than the 25 mm gun mounted on the M2 Bradley and the Hellfire has greater range than TOW missiles typically used by ground vehicles.


title: Stryker

text: On 30 September 2020, the Army awarded General Dynamics the IM-SHORAD contract worth $1.2 billion to deliver 144 vehicles over five years; the first order was for 28 vehicles for $230 million. The first four Stryker M-SHORAD vehicles were deployed to Germany in April 2021 as part of the 5th Battalion, 4th Air Defense Artillery Regiment under the 10th Army Air and Missile Defense Command. A full battalion will be fielded in September 2021.


title: Stryker

text: In 2022, the Army plans to field the Directed Energy Maneuver SHORAD (DE-MSHORAD), a Stryker equipped with a 50 kW laser to protect forward deployed soldiers from UAVs and rocket, artillery, and mortar (RAM) threats. A combat shoot-off of the laser-equipped Strykers facing realistic scenarios was conducted in July 2021.


title: Stryker

text: The Stryker is based on the LAV III light armored vehicle, which in turn was based on the LAV-25 series.


title: Stryker

text: The vehicle comes in several variants with a common engine, transmission, hydraulics, wheels, tires, differentials and transfer case. The M1130 Command Vehicle and M1133 Medical Evacuation Vehicle have an air conditioning unit mounted on the back. The medical vehicle also has a higher-capacity generator. A recent upgrade program provided a field retrofit kit to add air conditioning units to all variants, and production started in 2005 on the Mobile Gun System mounting an overhead General Dynamics Land Systems (GDLS) 105 mm automatic gun called the M1128 Mobile Gun System.


title: Stryker

text: For its powerpack the Stryker uses a Caterpillar diesel engine common in U.S. Army medium-lift trucks, eliminating additional training for maintenance crews and allowing the use of common parts. Because of obsolescence concerns, the Caterpillar 3126 engine was recently replaced by a Caterpillar C7 engine and the Allison 3200SP transmission.


title: Stryker

text: Pneumatic or hydraulic systems drive almost all of the vehicle's mechanical features; for example, a pneumatic system switches between 8×4 and 8×8 drive.


title: Stryker

text: Designers strove to ease the maintainer's job, equipping most cables, hoses, and mechanical systems with quick-disconnecting mechanisms. The engine and transmission can be removed and reinstalled in approximately two hours, allowing repairs to the turbocharger and many other components to be done outside the vehicle.


title: Stryker

text: Extensive computer support helps soldiers fight the enemy while reducing friendly fire incidents. Each vehicle can track friendly vehicles in the field as well as detected enemies. The driver and the vehicle commander (who also serves as the gunner) have periscopes that allow them to see outside the vehicle without exposing themselves to outside dangers. The vehicle commander also has access to a day-night thermal imaging camera which allows the vehicle commander to see what the driver sees. The vehicle commander has almost a 360-degree field of vision; the driver, a little more than 90 degrees.


title: Stryker

text: General Dynamics Land Systems is developing a new Power and Data Management Architecture to handle computer upgrades.


title: Stryker

text: The Stryker's thermal sights can see out to , compared to for night vision sights used by dismounted soldiers. This capability allows the vehicle to warn dismounted soldiers of threats which lie beyond the range of their night vision sights.


title: Stryker

text: The Stryker's hull is constructed from high-hardness steel which offers a basic level of protection against 14.5 mm rounds on the frontal arc, and all-around protection against 7.62 mm ball ammunition. In addition to this, Strykers are also equipped with bolt-on ceramic armor which offers all-around protection against 14.5 mm armor-piercing ammunition, and artillery fragments from 155 mm rounds. Problems were encountered with the initial batch of ceramic armor when it was found that a number of panels failed in tests against 14.5 mm ammunition. Army officials determined that this was due to changes in the composition and size of the panels introduced by their manufacturer, IBD Deisenroth. A stopgap solution of adding another 3 mm of steel armor was introduced until a permanent solution could be found. The issue was eventually resolved later in 2003 when DEW Engineering was selected as the new, exclusive supplier for the ceramic armor.


title: Stryker

text: In addition to the integral ceramic armor, optional packages have been developed. These include slat armor and Stryker reactive armor tiles (SRAT) for protection against rocket propelled grenades and other projectiles, the hull protection kit (HPK), armored skirts for additional protection against improvised explosive devices, and a ballistic shield to protect the commander's hatch.


title: Stryker

text: The Army began sending reactive armor tiles to Strykers in Iraq in 2004, as well as tiles for Abrams tanks and Bradley Fighting Vehicles. Tiles have to be specifically crafted for each vehicle type they are fitted to. Insurgents attempted to counter reactive armor by having teams fire multiple RPGs at once, but at close range these groups could be engaged and broken up. Reactive armor can be defeated by tandem-charge weapons like the RPG-29 or by explosively formed penetrators, although the Bradley's tiles can withstand EFPs. In 2005, slat armor for the Stryker vehicles was designed and developed by the Army Research Laboratory and the Aberdeen Test Center in Maryland to further protect them from RPGs. The cage is placed 50 cm ahead around the vehicle, allowing a RPG warhead to explode at a safe distance from the vehicle. In addition, the slat armor on the Stryker vehicles is reportedly effective against HEAT rounds. In May 2009, General Dynamics and Rafael won a contract to provide SRAT tiles to replace slat armor on Strykers. The additional weight of the two systems is comparable, but reactive armor tiles offer greater vehicle stability and maneuverability and "assured" rather than "statistical" protection.


title: Stryker

text: The Stryker also incorporates an automatic fire-extinguishing system with sensors in the engine and troop compartments that activate one or more halon fire bottles, which can also be activated by the driver, externally mounted fuel tanks, and a CBRN (Chemical, Biological, Radiological, Nuclear) Warfare system which will keep the crew compartment airtight and positively pressurized.


title: Stryker

text: Reports from military personnel and analysts state that the Stryker is superior to other light military vehicles regarding survivability against IEDs (improvised explosive devices).


title: Stryker

text: In spring 2016, a Stryker regiment deployed to Europe with the Saab mobile camouflage system (MCS), which both changes its physical appearance to better blend into the environment and incorporates properties that improve signature management against long-wave and mid-wave thermal sensors, near-wave and short-wave infrared, and radar. Further tests will influence the Army to decide whether to pursue acquiring the camouflage system through a Program of Record.


title: Stryker

text: In 2016, Artis LLC's Iron Curtain active protection system was selected for integration onto the Stryker as an interim system until the Army develops the Modular Active Protection System (MAPS); Iron Curtain differs from other APS by defeating projectiles just inches away from the vehicle, rather than intercepting them several meters out. However, in August 2018 the Army decided not to continue qualifying Iron Curtain onto the Stryker due to maturity issues with the system.


title: Stryker

text: With the exception of some specialized variants, the primary armament of the Stryker is a Protector M151 Remote Weapon Station with .50 in (12.7 mm) M2 machine gun, 7.62 mm M240B machine gun, or 40 mm Mk 19 grenade launcher. The choice of armament was driven by many factors. The US Army wanted a vehicle that could rapidly transport and protect infantry to and around battlefields.


title: Stryker

text: In September 2017, Raytheon fired Stinger missiles it had integrated into a Stryker-mounted Common Remotely Operated Weapon Station (CROWS) to intercept airborne targets in a demonstration, turning the vehicle into a short-range air defense system. The Army is considering the capability and if selected could be rapidly fielded within two years.


title: Stryker

text: In August 2018, 86 Strykers began fielding with a CROWS turret adapted to be able to fit a Javelin anti-tank missile tube, allowing the vehicle to fire the weapon instead of needing dismounted troops to use it.


title: Stryker

text: While the Stryker MGS gives medium brigades heavy firepower, the baseline infantry carrier vehicle has a light armament. Stryker program officials pursued mounting a 30 mm cannon to the ICV's remote weapons station. With the number of MGS vehicles per brigade being reduced, individual ICVs are to be up-gunned. The cannon will give greater firepower without needing to add a turret. The plan was to purchase and test a company set of 30 mm cannons and also determine if they should be issued for every Stryker or have one per company. The Army planned to test stabilized 30 mm cannons in early 2014, including Kongsberg Protech Systems' Medium Caliber Remote Weapons Station (RWS). Kongsberg, which makes the Stryker's M151 RWS joined with Stryker manufacturer, General Dynamics for the MCRWS in 2008. The MCRWS is not a true turret, which would extend into the crew compartment and take up space. It can be loaded from inside the vehicle, but does eliminate one of the four roof hatches. The autocannon is fed by two magazines holding armor piercing and high explosive ammunition, each carrying 78 rounds, with another 264 rounds stored in the hull. Test firings of a 30 mm cannon in the Kongsberg MCRWS occurred on a Stryker demonstrator vehicle on 19 February 2014. The cannon showed increased lethality and accuracy over the standard 0.50 in (12.7 mm) machine gun at ranges of , with four rounds in five-round bursts hitting the targets.


title: Stryker

text: After comparative testing of the Kongsberg MCRWS mounted to Stryker vehicles, the U.S. Army approved on 22 April 2015 the equipping of 81 of the 2nd Cavalry Regiment's Stykers with 30 mm cannons after the unit requested the upgrade. Reviews of the effectiveness of these new turrets in Stryker companies informed decisions regarding the upgrade of more Strykers across the nine Stryker Brigades. The remote turret requires a modification of the hull roof, and adds an additional two tons of weight with an upgraded suspension and wider tires. Outfitting the first Strykers with Mk44 Bushmaster II cannons was planned to occur during the next two years, it was stated in 2015. The cannon, which can engage light armored vehicles out to . is also able to fire airburst rounds that explode above a target to hit enemy troops behind barriers and can defend against unmanned aerial vehicles. The Kongsberg turret and Orbital ATK XM813 variant of the Mk44 Bushmaster were officially selected in December 2015. Kongsberg later renamed the turret system to "RT40" ("Remote Turret"). The first upgraded Stryker, designated XM1296 "Dragoon", was delivered for testing on 27 October 2016, with fielding to begin in May 2018. The first Infantry Carrier Vehicle - Dragoon (ICVD) was delivered to the 2CR in Germany on 8 December 2017.


title: Stryker

text: In April 2019, the Army decided to add cannon armament to Stryker DVH ICVVA1 vehicles in three brigades; the first is planned to be equipped in 2022. On 3 June 2021, the Army chose Oshkosh Defense to supply its Medium Caliber Weapon System (MCWS), the previous GDLS/Kongsberg team which supplied turrets to the 2nd Cavalry Regiment competed in the full-and-open competition but was not chosen to deliver more. The June contract award is worth up to $942 million over six years. As of the award date, the army had approved plans to outfit three brigades with 83 Medium Caliber Weapon Systems (MCWSs) each but the contract covers up to six brigades worth of vehicles if the service decides that is how it wants to proceed. The initial order calls for 91 vehicles for approximately US$130 million, and the army will provide the Oshkosh-led team with the vehicles and the XM813 cannon for integration. On 10 August 2021, Oshkosh received an additional US$99 million to cover the modification of 83 further vehicles, bringing the total number of vehicles under contract up to 174. The Oshkosh-led team provides a turret based on Rafael's Samson family of turrets but customized for the army.


title: Stryker

text: One of the key objectives outlined as part of the army transformation plan was the ability to deploy a brigade anywhere in the world within 96 hours, a division in 120 hours, and five divisions within 30 days. Operational mobility requirements dictated that the vehicle be transportable by C-130 aircraft and that it would be able to roll-off manned and ready to fight.


title: Stryker

text: The Stryker's suitability for C-130 transport has led to criticism that the aircraft's range may not meet the 1,000-mile goal. The aircraft's range depends on variables such as the C-130 variant and conditions at the departure airport. In a demonstration conducted in April 2003, a Stryker infantry company, with 21 Stryker vehicles, was transported by C-130s to another airport 70 miles away. This proved that the vehicle can be transported by C-130, but did not address the concerns regarding range and airport departure conditions. In addition, the slat armor, when installed, makes the vehicle too large to fit on a C-130, but RPG protection was not a requirement for C-130 transport. The Airbus A400M Atlas was being tested for compatibility with the Stryker in Autumn 2015.


title: Stryker

text: The Stryker is too heavy (19–26 tons, depending on variant and add-on features) to be lifted by existing helicopters.


title: Stryker

text: In August 2004, testing was conducted to determine if the Stryker MGS could be airdropped. This testing started with a series of 12-foot drop tests, followed by the US Air Force successfully airdropping an up-weighted Stryker Engineering Support Vehicle from a C-17. Even though this test was a success, none of the Stryker variants have been certified for airdrop. As of 2013 work continues in this area with the capability assumed for the Unified Quest war game.


title: Stryker

text: The Stryker can alter the pressure in all eight tires to suit terrain conditions: highway, cross-country, mud/sand/snow, and emergency. The system warns the driver if the vehicle exceeds the recommended speed for its tire pressure, then automatically inflates the tires to the next higher pressure setting. The system can also warn the driver of a flat tire, although the Stryker is equipped with run-flat tire inserts that also serve as bead-locks, allowing the vehicle to move at reduced speeds for several miles before the tire completely deteriorates.


title: Stryker

text: Some criticism of the Stryker continues a decades-long ongoing debate concerning whether tracked or wheeled vehicles are more effective. Conventional tracks have superior off-road mobility, greater load capacity, can pivot a vehicle in place, and are more resistant to battle damage. Wheeled vehicles are easier to maintain, and have higher road speeds. The US Army chose the Stryker over tracked vehicles due to these advantages.


title: Stryker

text: An additional issue is that rollover is a greater risk with the Stryker relative to other transport vehicles, due to its higher center of gravity. The high ground clearance, however, is likely to reduce the damage caused by land mines and improvised explosive devices on the vehicle.


title: Stryker

text: While not amphibious, the Stryker's watertight combat hatch seals allow it to ford water up to the tops of its wheels.


title: Stryker

text: The unit cost to purchase the initial Stryker ICVs (without add-ons, including the slat armor) was US$3 million in April 2002. By May 2003, the regular production cost per vehicle was US$1.42 million. In February 2012, the cost had risen to US$4.9 million.


title: Stryker

text: In 2013, media reports stated that the Stryker Project Management Office had ordered almost $900 million in unneeded or outdated parts due to a failure to control its inventory during the War on Terror.


title: Stryker

text: A standard Stryker Brigade typically consists of: 130 Infantry Carrier Vehicles; 9 Anti-Tank Guided Missile Vehicles; 27 Medical Evacuation Vehicles; 12 Engineer Squad Vehicles; 32 Commander's Vehicles; 36 120 mm Mounted Mortar Carriers; 56 Reconnaissance Vehicles; 13 Fire Support Vehicles; three NBC Reconnaissance Vehicles; and 12 105 mm Mobile Gun Systems.


title: Stryker

text: The Stryker family of vehicles fills a role in the United States Army that is neither heavy nor light, but rather an attempt to create a force that can move infantry to the battlefield quickly and in relative security. Brigades that have been converted to the Stryker have primarily been light, or, in the case of the 2nd Cavalry Regiment, unarmored Humvee-based cavalry scouts. For these units, the addition of Strykers has increased combat power by providing armor protection, a vehicle-borne weapon system to support each dismounted squad, and the speed and range to conduct missions far from the operating base.


title: Stryker

text: Stryker units seem to be especially effective in urban areas, where vehicles can establish initial security positions near a building and dismount squads on a doorstep.


title: Stryker

text: The Stryker relies on its speed and communications for the majority of its defense against heavy weapon systems. Most Stryker variants are not designed to engage heavily armored units, relying on communication and other units to control threats outside of its classification. One variant is armed with anti-tank missiles.


title: Stryker

text: Brigades equipped with the Stryker are intended to be strategically mobile, i.e., capable of being rapidly deployed over long distances. As such, the Stryker was intentionally designed with a lower level of protection compared to tracked vehicles like the M2 Bradley, but with much lower logistic requirements.


title: Stryker

text: Although the Stryker was designed to be rapidly deployable and not heavily armored, a training exercise in January 2014 demonstrated that in some circumstances, a Stryker brigade with vehicles and infantry using anti-tank missiles could successfully engage a conventional enemy force of tanks, armored vehicles, and helicopters.


title: Stryker

text: Due to their use during the 2003–11 Iraq War, many reports have come back on the Stryker's performance. Soldiers and officers who use Strykers defend them as very effective vehicles; a 2005 "Washington Post" article states that "commanders, soldiers and mechanics who use the Stryker fleet daily in one of Iraq's most dangerous areas unanimously praised the vehicle. The defects outlined in the report were either wrong or relatively minor and did little to hamper the Stryker's effectiveness." In the same article, Col. Robert B. Brown, commander of the 1st Brigade, 25th Infantry Division (Stryker Brigade Combat Team), said that the Strykers saved the lives of at least 100 soldiers deployed in northern Iraq. The article also states that the bolt-on slat armor is effective ballistic protection, which was the main flaw cited in 2009 by critics. However, a 2003 GAO report to Congress stated that the added weight of slat armor created a mobility limitation in wet conditions due to shortcomings in the vehicle's suspension.


title: Stryker

text: Reports from military personnel and analysts indicate the Stryker is superior to other light military vehicles of the US Army regarding survivability against IEDs (improvised explosive devices). Soldiers have anecdotally referred to Strykers as "Kevlar Coffins".


title: Stryker

text: The non-partisan Project on Government Oversight received unexpectedly positive reviews when it spoke to soldiers who served in Strykers:


title: Stryker

text: "The Stryker’s fantastic. It has incredible mobility, incredible speed..." "We’ve been hit by 84 suicide VBIEDs (...car bombs) have hit Strykers, and I’ve had the greater majority of soldiers walk away without even a scratch. It’s absolutely amazing. If I were in any other type vehicle, I would’ve had huge problems," said Colonel Robert Brown, commander of the 1st Brigade of the 25th Infantry Division. Maj. Doug Baker, executive officer of the 5th Battalion, 20th Infantry Regiment in 3/2 said, "When you rolled out (of) the gate, you were fairly confident that the vehicle was going to take care of you… I’m familiar with what a Bradley can do. It’s a fantastic vehicle, but I would take a Stryker over it in Iraq any day." Crew members of the Stryker Mobile Gun System attest to its "seamless" ability to fill the high-mobility niche between main battle tank and armored personnel carrier.


title: Stryker

text: As of 2005, the Stryker vehicle logged more than 27 million combat miles, with operational readiness rates greater than 96 percent.


title: Stryker

text: The Stryker chassis' modular design supports a wide range of variants. The main chassis is the Infantry Carrier Vehicle (ICV).


title: Stryker

text: In response to poor performance against IEDs, the Army began manufacturing and retrofitting Stryker vehicles with a more survivable double v-hull designed underside. Seven Stryker versions are being produced in this configuration; the M1256 ICVV, M1252 MCVV, M1255


title: Stryker

text: CVV, M1251 FSVV, M1257 ESVV, M1254 MEVV and M1253 ATVV. Three variants are not receiving the new hull and will retain their current flat-bottom configuration: the M1127 Reconnaissance Vehicle, the M1128 Mobile Gun System, and the M1135 NBC Reconnaissance Vehicle.


title: Stryker

text: – Used by the US Army and the Army National Guard. A total of 4,466 Stryker vehicles were delivered until production ended in 2014. As of 2022 nine Stryker brigades exist:


title: Battleship

text: A battleship is a large armored warship with a main battery consisting of large caliber guns. It dominated naval warfare in the late 19th and early 20th centuries.


title: Battleship

text: The term "battleship" came into use in the late 1880s to describe a type of ironclad warship, now referred to by historians as pre-dreadnought battleships. In 1906, the commissioning of into the United Kingdom's Royal Navy heralded a revolution in the field of battleship design. Subsequent battleship designs, influenced by HMS "Dreadnought", were referred to as "dreadnoughts", though the term eventually became obsolete as dreadnoughts became the only type of battleship in common use.


title: Battleship

text: Battleships were a symbol of naval dominance and national might, and for decades the battleship was a major factor in both diplomacy and military strategy. A global arms race in battleship construction began in Europe in the 1890s and culminated at the decisive Battle of Tsushima in 1905, the outcome of which significantly influenced the design of HMS "Dreadnought". The launch of "Dreadnought" in 1906 commenced a new naval arms race. Three major fleet actions between steel battleships took place: the long-range gunnery duel at the Battle of the Yellow Sea in 1904, the decisive Battle of Tsushima in 1905 (both during the Russo-Japanese War) and the inconclusive Battle of Jutland in 1916, during the First World War. Jutland was the largest naval battle and the only full-scale clash of dreadnoughts of the war, and it was the last major battle in naval history fought primarily by battleships.


title: Battleship

text: The Naval Treaties of the 1920s and 1930s limited the number of battleships, though technical innovation in battleship design continued. Both the Allied and Axis powers built battleships during World War II, though the increasing importance of the aircraft carrier meant that the battleship played a less important role than had been expected in that conflict.


title: Battleship

text: The value of the battleship has been questioned, even during their heyday. There were few of the decisive fleet battles that battleship proponents expected and used to justify the vast resources spent on building battlefleets. Even in spite of their huge firepower and protection, battleships were increasingly vulnerable to much smaller and relatively inexpensive weapons: initially the torpedo and the naval mine, and later aircraft and the guided missile. The growing range of naval engagements led to the aircraft carrier replacing the battleship as the leading capital ship during World War II, with the last battleship to be launched being in 1944. Four battleships were retained by the United States Navy until the end of the Cold War for fire support purposes and were last used in combat during the Gulf War in 1991. The last battleships were struck from the U.S. Naval Vessel Register in the 2000s. Many World War II-era battleships remain in use today as museum ships.


title: Battleship

text: A ship of the line was a large, unarmored wooden sailing ship which mounted a battery of up to 120 smoothbore guns and carronades, which came to prominence with the adoption of line of battle tactics in the early 17th century and the end of the sailing battleship's heyday in the 1830s. From 1794, the alternative term 'line of battle ship' was contracted (informally at first) to 'battle ship' or 'battleship'.


title: Battleship

text: The sheer number of guns fired broadside meant a ship of the line could wreck any wooden enemy, holing her hull, knocking down masts, wrecking her rigging, and killing her crew. However, the effective range of the guns was as little as a few hundred yards, so the battle tactics of sailing ships depended in part on the wind.


title: Battleship

text: Over time, ships of the line gradually became larger and carried more guns, but otherwise remained quite similar. The first major change to the ship of the line concept was the introduction of steam power as an auxiliary propulsion system. Steam power was gradually introduced to the navy in the first half of the 19th century, initially for small craft and later for frigates. The French Navy introduced steam to the line of battle with the 90-gun in 1850—the first true steam battleship. "Napoléon" was armed as a conventional ship-of-the-line, but her steam engines could give her a speed of , regardless of the wind. This was a potentially decisive advantage in a naval engagement. The introduction of steam accelerated the growth in size of battleships. France and the United Kingdom were the only countries to develop fleets of wooden steam screw battleships although several other navies operated small numbers of screw battleships, including Russia (9), the Ottoman Empire (3), Sweden (2), Naples (1), Denmark (1) and Austria (1).


title: Battleship

text: The adoption of steam power was only one of a number of technological advances which revolutionized warship design in the 19th century. The ship of the line was overtaken by the ironclad: powered by steam, protected by metal armor, and armed with guns firing high-explosive shells.


title: Battleship

text: Guns that fired explosive or incendiary shells were a major threat to wooden ships, and these weapons quickly became widespread after the introduction of 8-inch shell guns as part of the standard armament of French and American line-of-battle ships in 1841. In the Crimean War, six line-of-battle ships and two frigates of the Russian Black Sea Fleet destroyed seven Turkish frigates and three corvettes with explosive shells at the Battle of Sinop in 1853. Later in the war, French ironclad floating batteries used similar weapons against the defenses at the Battle of Kinburn.


title: Battleship

text: Nevertheless, wooden-hulled ships stood up comparatively well to shells, as shown in the 1866 Battle of Lissa, where the modern Austrian steam two-decker ranged across a confused battlefield, rammed an Italian ironclad and took 80 hits from Italian ironclads, many of which were shells, but including at least one 300-pound shot at point-blank range. Despite losing her bowsprit and her foremast, and being set on fire, she was ready for action again the very next day.


title: Battleship

text: The development of high-explosive shells made the use of iron armor plate on warships necessary. In 1859 France launched , the first ocean-going ironclad warship. She had the profile of a ship of the line, cut to one deck due to weight considerations. Although made of wood and reliant on sail for most journeys, "Gloire" was fitted with a propeller, and her wooden hull was protected by a layer of thick iron armor. "Gloire" prompted further innovation from the Royal Navy, anxious to prevent France from gaining a technological lead.


title: Battleship

text: The superior armored frigate followed "Gloire" by only 14 months, and both nations embarked on a program of building new ironclads and converting existing screw ships of the line to armored frigates. Within two years, Italy, Austria, Spain and Russia had all ordered ironclad warships, and by the time of the famous clash of the and the at the Battle of Hampton Roads at least eight navies possessed ironclad ships.


title: Battleship

text: Navies experimented with the positioning of guns, in turrets (like the USS "Monitor"), central-batteries or barbettes, or with the ram as the principal weapon. As steam technology developed, masts were gradually removed from battleship designs. By the mid-1870s steel was used as a construction material alongside iron and wood. The French Navy's , laid down in 1873 and launched in 1876, was a central battery and barbette warship which became the first battleship in the world to use steel as the principal building material.


title: Battleship

text: The term "battleship" was officially adopted by the Royal Navy in the re-classification of 1892. By the 1890s, there was an increasing similarity between battleship designs, and the type that later became known as the 'pre-dreadnought battleship' emerged. These were heavily armored ships, mounting a mixed battery of guns in turrets, and without sails. The typical first-class battleship of the pre-dreadnought era displaced 15,000 to 17,000 tons, had a speed of , and an armament of four guns in two turrets fore and aft with a mixed-caliber secondary battery amidships around the superstructure. An early design with superficial similarity to the pre-dreadnought is the British of 1871.


title: Battleship

text: The slow-firing main guns were the principal weapons for battleship-to-battleship combat. The intermediate and secondary batteries had two roles. Against major ships, it was thought a 'hail of fire' from quick-firing secondary weapons could distract enemy gun crews by inflicting damage to the superstructure, and they would be more effective against smaller ships such as cruisers. Smaller guns (12-pounders and smaller) were reserved for protecting the battleship against the threat of torpedo attack from destroyers and torpedo boats.


title: Battleship

text: The beginning of the pre-dreadnought era coincided with Britain reasserting her naval dominance. For many years previously, Britain had taken naval supremacy for granted. Expensive naval projects were criticized by political leaders of all inclinations. However, in 1888 a war scare with France and the build-up of the Russian navy gave added impetus to naval construction, and the British Naval Defence Act of 1889 laid down a new fleet including eight new battleships. The principle that Britain's navy should be more powerful than the two next most powerful fleets combined was established. This policy was designed to deter France and Russia from building more battleships, but both nations nevertheless expanded their fleets with more and better pre-dreadnoughts in the 1890s.