title: Inflation

text: The real bills doctrine (RBD) asserts that banks should issue their money in exchange for short-term real bills of adequate value. As long as banks only issue a dollar in exchange for assets worth at least a dollar, the issuing bank's assets will naturally move in step with its issuance of money, and the money will hold its value. Should the bank fail to get or maintain assets of adequate value, then the bank's money will lose value, just as any financial security will lose value if its asset backing diminishes. The real bills doctrine (also known as the backing theory) thus asserts that inflation results when money outruns its issuer's assets. The quantity theory of money, in contrast, claims that inflation results when money outruns the economy's production of goods.


title: Inflation

text: Currency and banking schools of economics argue the RBD, that banks should also be able to issue currency against bills of trading, which is "real bills" that they buy from merchants. This theory was important in the 19th century in debates between "Banking" and "Currency" schools of monetary soundness, and in the formation of the Federal Reserve. In the wake of the collapse of the international gold standard post 1913, and the move towards deficit financing of government, RBD has remained a minor topic, primarily of interest in limited contexts, such as currency boards. It is generally held in ill repute today, with Frederic Mishkin, a governor of the Federal Reserve going so far as to say it had been "completely discredited."


title: Inflation

text: The debate between currency, or quantity theory, and the banking schools during the 19th century prefigures current questions about the credibility of money in the present. In the 19th century, the banking schools had greater influence in policy in the United States and Great Britain, while the currency schools had more influence "on the continent", that is in non-British countries, particularly in the Latin Monetary Union and the Scandinavian Monetary Union.


title: Inflation

text: In 2019 monetary historians Thomas M. Humphrey and Richard H. Timberlake published "Gold, the Real Bills Doctrine, and the Fed: Sources of Monetary Disorder 1922-1938".


title: Inflation

text: Inflation is the decrease in the purchasing power of a currency. That is, when the general level of prices rise, each monetary unit can buy fewer goods and services in aggregate. The effect of inflation differs on different sectors of the economy, with some sectors being adversely affected while others benefitting. For example, with inflation, those segments in society which own physical assets, such as property, stock etc., benefit from the price/value of their holdings going up, when those who seek to acquire them will need to pay more for them. Their ability to do so will depend on the degree to which their income is fixed. For example, increases in payments to workers and pensioners often lag behind inflation, and for some people income is fixed. Also, individuals or institutions with cash assets will experience a decline in the purchasing power of the cash. Increases in the price level (inflation) erode the real value of money (the functional currency) and other items with an underlying monetary nature.


title: Inflation

text: Debtors who have debts with a fixed nominal rate of interest will see a reduction in the "real" interest rate as the inflation rate rises. The real interest on a loan is the nominal rate minus the inflation rate. The formula "R = N-I" approximates the correct answer as long as both the nominal interest rate and the inflation rate are small. The correct equation is "r = n/i" where "r", "n" and "i" are expressed as ratios (e.g. 1.2 for +20%, 0.8 for −20%). As an example, when the inflation rate is 3%, a loan with a nominal interest rate of 5% would have a real interest rate of approximately 2% (in fact, it's 1.94%). Any unexpected increase in the inflation rate would decrease the real interest rate. Banks and other lenders adjust for this inflation risk either by including an inflation risk premium to fixed interest rate loans, or lending at an adjustable rate.


title: Inflation

text: High or unpredictable inflation rates are regarded as harmful to an overall economy. They add inefficiencies in the market, and make it difficult for companies to budget or plan long-term. Inflation can act as a drag on productivity as companies are forced to shift resources away from products and services to focus on profit and losses from currency inflation. Uncertainty about the future purchasing power of money discourages investment and saving. Inflation can also impose hidden tax increases. For instance, inflated earnings push taxpayers into higher income tax rates unless the tax brackets are indexed to inflation.


title: Inflation

text: With high inflation, purchasing power is redistributed from those on fixed nominal incomes, such as some pensioners whose pensions are not indexed to the price level, towards those with variable incomes whose earnings may better keep pace with the inflation. This redistribution of purchasing power will also occur between international trading partners. Where fixed exchange rates are imposed, higher inflation in one economy than another will cause the first economy's exports to become more expensive and affect the balance of trade. There can also be negative effects to trade from an increased instability in currency exchange prices caused by unpredictable inflation.


title: Inflation

text: The real purchasing power of fixed payments is eroded by inflation unless they are inflation-adjusted to keep their real values constant. In many countries, employment contracts, pension benefits, and government entitlements (such as social security) are tied to a cost-of-living index, typically to the consumer price index. A "cost-of-living adjustment" (COLA) adjusts salaries based on changes in a cost-of-living index. It does not control inflation, but rather seeks to mitigate the consequences of inflation for those on fixed incomes. Salaries are typically adjusted annually in low inflation economies. During hyperinflation they are adjusted more often. They may also be tied to a cost-of-living index that varies by geographic location if the employee moves.


title: Inflation

text: Annual escalation clauses in employment contracts can specify retroactive or future percentage increases in worker pay which are not tied to any index. These negotiated increases in pay are colloquially referred to as cost-of-living adjustments ("COLAs") or cost-of-living increases because of their similarity to increases tied to externally determined indexes.


title: Inflation

text: Monetary policy is the policy enacted by the monetary authorities (most frequently the central bank of a nation) to control the interest rateor equivalently the money supplyso as to control inflation and ensure price stability. Higher interest rates reduce the economy's money supply because fewer people seek loans. When banks make loans, the loan proceeds are generally deposited in bank accounts that are part of the money supply, thereby expanding it. When banks make fewer loans, the amount of bank deposits and hence the money supply decrease. For example, in the early 1980s, when the US federal funds rate exceeded 15%, the quantity of Federal Reserve dollars fell 8.1%, from US$8.6 trillion down to $7.9 trillion.


title: Inflation

text: In the latter half of the 20th century, there was debate between Keynesians and monetarists about the appropriate instrument to use to control inflation. Monetarists emphasize a low and steady growth rate of the money supply, while Keynesians emphasize controlling aggregate demand, by reducing demand during economic expansions and increasing demand during recessions to keep inflation stable. Control of aggregate demand can be achieved by using either monetary policy or fiscal policy (increasing taxation or reducing government spending to reduce demand). Ever since the 1980s, most countries have primarily relied on monetary policy to control inflation. When inflation beyond an acceptable level takes place, the country's central bank increases the interest rate, which will tend to slow down economic growth and inflation. Some central banks have a symmetrical inflation target, while others only react when inflation rises above a certain threshold.


title: Inflation

text: In the 21st century, most economists favor a low and steady rate of inflation. In most countries, central banks or other monetary authorities are tasked with keeping interest rates and prices stable, and inflation near a target rate. These inflation targets may be publicly disclosed or not. In most OECD countries, the inflation target is usually about 2% to 3% (in developing countries like Armenia, the inflation target is higher, at around 4%). Central banks target a low inflation rate because they believe that high inflation is economically costly because it would create uncertainty about differences in relative prices and about the inflation rate itself. A low positive inflation rate is targeted rather than a zero or negative one because the latter could cause or worsen recessions; low (as opposed to zero or negative) inflation reduces the severity of economic recessions by enabling the labor market to adjust more quickly in a downturn, and reduces the risk that a liquidity trap prevents monetary policy from stabilizing the economy.


title: Inflation

text: Under a fixed exchange rate currency regime, a country's currency is tied in value to another single currency or to a basket of other currencies (or sometimes to another measure of value, such as gold). A fixed exchange rate is usually used to stabilize the value of a currency, vis-a-vis the currency it is pegged to. It can also be used as a means to control inflation. However, as the value of the reference currency rises and falls, so does the currency pegged to it. This essentially means that the inflation rate in the fixed exchange rate country is determined by the inflation rate of the country the currency is pegged to. In addition, a fixed exchange rate prevents a government from using domestic monetary policy to achieve macroeconomic stability.


title: Inflation

text: Under the Bretton Woods agreement, most countries around the world had currencies that were fixed to the U.S. dollar. This limited inflation in those countries, but also exposed them to the danger of speculative attacks. After the Bretton Woods agreement broke down in the early 1970s, countries gradually turned to floating exchange rates. However, in the later part of the 20th century, some countries reverted to a fixed exchange rate as part of an attempt to control inflation. This policy of using a fixed exchange rate to control inflation was used in many countries in South America in the later part of the 20th century (e.g. Argentina (1991–2002), Bolivia, Brazil, Chile, Pakistan, etc.).


title: Inflation

text: The gold standard is a monetary system in which a region's common medium of exchange is paper notes (or other monetary token) that are normally freely convertible into pre-set, fixed quantities of gold. The standard specifies how the gold backing would be implemented, including the amount of specie per currency unit. The currency itself has no "innate value", but is accepted by traders because it can be redeemed for the equivalent specie. A U.S. silver certificate, for example, could be redeemed for an actual piece of silver.


title: Inflation

text: The gold standard was partially abandoned via the international adoption of the Bretton Woods system. Under this system all other major currencies were tied at fixed rates to the US dollar, which itself was tied by the US government to gold at the rate of US$35 per ounce. The Bretton Woods system broke down in 1971, causing most countries to switch to fiat money money backed only by the laws of the country.


title: Inflation

text: Under a gold standard, the long term rate of inflation (or deflation) would be determined by the growth rate of the supply of gold relative to total output. Critics argue that this will cause arbitrary fluctuations in the inflation rate, and that monetary policy would essentially be determined by gold mining.


title: Inflation

text: Another method attempted in the past have been wage and price controls ("incomes policies"). Temporary price controls may be used as a complement to other policies to fight inflation; price controls may make disinflation faster, while reducing the need for unemployment to reduce inflation. If price controls are used during a recession, the kinds of distortions that price controls cause may be lessened. However, economists generally advise against the imposition of price controls.


title: Inflation

text: Wage and price controls, in combination with rationing, have been used successfully in wartime environments. However, their use in other contexts is far more mixed. Notable failures of their use include the 1972 imposition of wage and price controls by Richard Nixon. More successful examples include the Prices and Incomes Accord in Australia and the Wassenaar Agreement in the Netherlands.


title: Inflation

text: In general, wage and price controls are regarded as a temporary and exceptional measures, only effective when coupled with policies designed to reduce the underlying causes of inflation during the wage and price control regime, for example, winning the war being fought. They often have perverse effects, due to the distorted signals they send to the market. Artificially low prices often cause rationing and shortages and discourage future investment, resulting in yet further shortages. The usual economic analysis is that any product or service that is under-priced is overconsumed. For example, if the official price of bread is too low, there will be too little bread at official prices, and too little investment in bread making by the market to satisfy future needs, thereby exacerbating the problem in the long term.


title: Mil Mi-24

text: The Mil Mi-24 (; NATO reporting name: Hind) is a large helicopter gunship, attack helicopter and low-capacity troop transport with room for eight passengers. It is produced by Mil Moscow Helicopter Plant and has been operated since 1972 by the Soviet Air Force and its successors, along with 48 other nations.


title: Mil Mi-24

text: In NATO circles, the export versions, Mi-25 and Mi-35, are denoted with a letter suffix as "Hind D" and "Hind E". Soviet pilots called the Mi-24 the "flying tank" (), a term used historically with the famous World War II Soviet Il-2 "Shturmovik" armored ground attack aircraft. More common unofficial nicknames were "Galina" (or "Galya"), "Crocodile" (), due to the helicopter's camouflage scheme, and "Drinking Glass" (), because of the flat glass plates that surround earlier Mi-24 variants' cockpits.


title: Mil Mi-24

text: During the early 1960s, it became apparent to Soviet designer Mikhail Mil that the trend towards ever-increasing battlefield mobility would result in the creation of flying infantry fighting vehicles, which could be used to perform both fire support and infantry transport missions. The first expression of this concept was a mock-up unveiled in 1966 in the experimental shop of the Ministry of Aircraft's factory number 329, where Mil was head designer. The mock-up designated V-24 was based on another project, the V-22 utility helicopter, which never flew. The V-24 had a central infantry compartment that could hold eight troops sitting back to back, and a set of small wings positioned to the top rear of the passenger cabin, capable of holding up to six missiles or rockets and a twin-barreled GSh-23L cannon fixed to the landing skid.


title: Mil Mi-24

text: Mil proposed the design to the heads of the Soviet armed forces. While he had the support of a number of strategists, he was opposed by several more senior members of the armed forces, who believed that conventional weapons were a better use of resources. Despite the opposition, Mil managed to persuade the defence minister's first deputy, Marshal Andrey A. Grechko, to convene an expert panel to look into the matter. While the panel's opinions were mixed, supporters of the project eventually held sway and a request for design proposals for a battlefield support helicopter was issued. The development and use of gunships and attack helicopters by the US Army during the Vietnam War convinced the Soviets of the advantages of armed helicopter ground support, and fostered support for the development of the Mi-24.


title: Mil Mi-24

text: Mil engineers prepared two basic designs: a 7-ton single-engine design and a 10.5-ton twin-engine design, both based on the 1,700 hp Izotov TV3-177A turboshaft. Later, three complete mock-ups were produced, along with five cockpit mock-ups to allow the pilot and weapon station operator positions to be fine-tuned.


title: Mil Mi-24

text: The Kamov design bureau suggested an army version of their Ka-25 ASW helicopter as a low-cost option. This was considered but later dropped in favor of the new Mil twin-engine design. A number of changes were made at the insistence of the military, including the replacement of the 23 mm cannon with a rapid-fire heavy machine gun mounted in a chin turret, and the use of the 9K114 Shturm (AT-6 Spiral) anti-tank missile.


title: Mil Mi-24

text: A directive was issued on 6 May 1968 to proceed with the development of the twin-engine design. Work proceeded under Mil until his death in 1970. Detailed design work began in August 1968 under the codename Yellow 24. A full-scale mock-up of the design was reviewed and approved in February 1969. Flight tests with a prototype began on 15 September 1969 with a tethered hover, and four days later the first free flight was conducted. A second prototype was built, followed by a test batch of ten helicopters.


title: Mil Mi-24

text: Acceptance testing for the design began in June 1970, continuing for 18 months. Changes made in the design addressed structural strength, fatigue problems and vibration levels. Also, a 12-degree anhedral was introduced to the wings to address the aircraft's tendency to Dutch roll at speeds in excess of 200 km/h (124 mph), and the Falanga missile pylons were moved from the fuselage to the wingtips. The tail rotor was moved from the right to the left side of the tail, and the rotation direction reversed. The tail rotor now rotated up on the side towards the front of the aircraft, into the downwash of the rotor, which increased its efficiency. A number of other design changes were made until the production version Mi-24A ("izdeliye 245") entered production in 1970, obtaining its initial operating capability in 1971 and was officially accepted into the state arsenal in 1972.


title: Mil Mi-24

text: In 1972, following completion of the Mi-24, development began on a unique attack helicopter with transport capability. The new design had a reduced transport capability (three troops instead of eight) and was called the Mi-28, and that of the Ka-50 attack helicopter, which is smaller and more maneuverable and does not have the large cabin for carrying troops. In October 2007, the Russian Air Force announced it would replace its Mi-24 fleet with Mi-28Ns and Ka-52s by 2015. However, after the successful operation of the type in Syria it was decided to keep it in service and upgrade it with new electronics, sights, arms and night vision goggles.


title: Mil Mi-24

text: The core of the aircraft was derived from the Mil Mi-8 (NATO reporting name "Hip") with two top-mounted turboshaft engines driving a mid-mounted 17.3 m five-blade main rotor and a three-blade tail rotor. The engine configuration gave the aircraft its distinctive double air intake. Original versions have an angular greenhouse-style cockpit; Model D and later have a characteristic tandem cockpit with a "double bubble" canopy. Other airframe components came from the Mi-14 "Haze". Two mid-mounted stub wings provide weapon hardpoints, each offering three stations, in addition to providing lift. The loadout mix is mission dependent; Mi-24s can be tasked with close air support, anti-tank operations, or aerial combat.


title: Mil Mi-24

text: The Mi-24's titanium rotor blades are resistant to 12.7 mm rounds. The cockpit is protected by ballistic-resistant windscreens and a titanium-armored tub. The cockpit and crew compartment are overpressurized to protect the crew in NBC conditions.


title: Mil Mi-24

text: Considerable attention was given to making the Mi-24 fast. The airframe was streamlined, and fitted with retractable tricycle undercarriage landing gear to reduce drag. At high speed, the wings provide considerable lift (up to a quarter of total lift). The main rotor was tilted 2.5° to the right from the fuselage to compensate for translating tendency at a hover. The landing gear was also tilted to the left so that the rotor would still be level when the aircraft was on the ground, making the rest of the airframe tilt to the left. The tail was also asymmetrical to give a side force at speed, thus unloading the tail rotor.


title: Mil Mi-24

text: A modified Mi-24B, named A-10, was used in several speed and time-to-climb world record attempts. The helicopter had been modified to reduce weight as much as possible—one measure was the removal of the stub wings. The previous official speed record was set on 13 August 1975 over a closed 1000 km course of 332.65 km/h (206.7 mph); many of the female-specific records were set by the all-female crew of Galina Rastorguyeva and Lyudmila Polyanskaya. On 21 September 1978, the A-10 set the absolute speed record for helicopters with 368.4 km/h (228.9 mph) over a 15/25 km course. The record stood until 1986, when it was broken by the current official record holder, a modified British Westland Lynx.


title: Mil Mi-24

text: As a combination of armoured gunship and troop transport, the Mi-24 has no direct NATO counterpart. While the UH-1 ("Huey") helicopters were used by the US in the Vietnam War either to ferry troops, or as gunships, they were not able to do both at the same time. Converting a UH-1 into a gunship meant stripping the entire passenger area to accommodate extra fuel and ammunition, and removing its troop transport capability. The Mi-24 was designed to do both, and this was greatly exploited by airborne units of the Soviet Army during the 1980–89 Soviet–Afghan War. The closest Western equivalent was the American Sikorsky S-67 Blackhawk, which used many of the same design principles and was also built as a high-speed, high-agility attack helicopter with limited troop transport capability using many components from the existing Sikorsky S-61. The S-67, however, was never adopted for service. Other Western equivalents are the Romanian Army's IAR 330, which is a licence-built armed version of the Aérospatiale SA 330 Puma, and the MH-60 Direct Action Penetrator, a special purpose armed variant of the Sikorsky UH-60 Black Hawk.


title: Mil Mi-24

text: The first combat use of the Mi-24 was with the Ethiopian forces during the Ogaden War against Somalia. The helicopters formed part of a massive airlift of military equipment from the Soviet Union, after the Soviets switched sides towards the end of 1977. The helicopters were instrumental in the combined air and ground assault that allowed the Ethiopians to retake the Ogaden by the beginning of 1978.


title: Mil Mi-24

text: The Libyan air force used Mi-24A and Mi-25 units during their numerous interventions in Chad's civil war. The Mi-24s were first used in October 1980 in the battle of N'Djamena, where they helped the People's Armed Forces seize the capital.


title: Mil Mi-24

text: In March 1987, the Armed Forces of the North, which were backed by the US and France, captured a Libyan air force base at Ouadi-Doum in Northern Chad. Among the aircraft captured during this raid were three Mi-25s. These were supplied to France, which in turn sent one to the United Kingdom and one to the US.


title: Mil Mi-24

text: The aircraft was operated extensively during the Soviet–Afghan War, mainly for bombing Mujahideen fighters. When the U.S. supplied heat-seeking Stinger missiles to the Mujahideen, the Soviet Mi-8 and Mi-24 helicopters proved to be favorite targets of the rebels.


title: Mil Mi-24

text: It is difficult to find the total number of Mi-24s used in Afghanistan. At the end of 1990, the whole Soviet Army had 1,420 Mi-24s. During the Afghan war, sources estimated the helicopter strength to be as much as 600 units, with up to 250 being Mi-24s. Whereas a (formerly secret) 1987 Central Intelligence Agency (CIA) report says that the number of Mi-24s in theatre increased from 85 in 1980 to 120 in 1985.


title: Mil Mi-24

text: In April 1979, Mi-24s were supplied to the Afghan government to deal with Mujahideen guerrillas. The Afghan pilots were well-trained and made effective use of their machines, but the Mujahideen were not easy targets. The first Mi-24 to be lost in action was shot down by guerrillas on 18 July 1979.


title: Mil Mi-24

text: Despite facing strong resistance from Afghan rebels, the Mi-24 proved to be very destructive. The rebels called the Mi-24 ""Shaitan-Arba"" (Satan's Chariot)". In one case, an Mi-24 pilot who was out of ammunition managed to rescue a company of infantry by maneuvering aggressively towards Mujahideen guerrillas and scaring them off. The Mi-24 was popular with ground troops, since it could stay on the battlefield and provide fire as needed, while "fast mover" strike jets could only stay for a short time before heading back to base to refuel.


title: Mil Mi-24

text: The Mi-24's favoured munition was the S-8 rocket, the S-5 having proven too light to be effective. The gun pod was also popular. Extra rounds of rocket ammunition were often carried internally so that the crew could land and self-reload in the field. The Mi-24 could carry ten iron bombs for attacks on camps or strongpoints, while harder targets could be dealt with a load of four or two iron bombs. Some Mi-24 crews became experts at dropping bombs precisely on targets. Fuel-air explosive bombs were also used in a few instances, though crews initially underestimated the sheer blast force of such weapons and were caught by the shock waves. The 9K114 Shturm was used infrequently, largely due to a lack of targets early in the war that required the precision and range the missile offered and a need to keep to stocks of anti tank missiles in Europe. After the Mujahideen got access to more advanced anti aircraft weapons later in the war the Shturm was used more often by Mi-24 units.


title: Mil Mi-24

text: Combat experience quickly demonstrated the disadvantages of having an Mi-24 carrying troops. Gunship crews found the soldiers a concern and a distraction while being shot at, and preferred to fly lightly loaded anyway, especially given their operations from high ground altitudes in Afghanistan. Mi-24 troop compartment armour was often removed to reduce weight. Troops would be carried in Mi-8 helicopters while the Mi-24s provided fire support.


title: Mil Mi-24

text: It proved useful to carry a technician in the Mi-24's crew compartment to handle a light machine gun in a window port. This gave the Mi-24 some ability to "watch its back" while leaving a target area. In some cases, a light machine gun was fitted on both sides to allow the technician to move from one side to the other without having to take the machine gun with him.


title: Mil Mi-24

text: This weapon configuration still left the gunship blind to the direct rear, and Mil experimented with fitting a machine gun in the back of the fuselage, accessible to the gunner through a narrow crawl-way. The experiment was highly unsuccessful, as the space was cramped, full of engine exhaust fumes, and otherwise unbearable. During a demonstration, an overweight Soviet Air Force general got stuck in the crawl-way. Operational Mi-24s were retrofitted with rear-view mirrors to help the pilot spot threats and take evasive action.


title: Mil Mi-24

text: Besides protecting helicopter troop assaults and supporting ground actions, the Mi-24 also protected convoys, using rockets with flechette warheads to drive off ambushes; performed strikes on predesignated targets; and engaged in "hunter-killer" sweeps. Hunter-killer Mi-24s operated at a minimum in pairs, but were more often in groups of four or eight, to provide mutual fire support. The Mujahideen learned to move mostly at night to avoid the gunships, and in response the Soviets trained their Mi-24 crews in night-fighting, dropping parachute flares to illuminate potential targets for attack. The Mujahideen quickly caught on and scattered as quickly as possible when Soviet target designation flares were lit nearby.


title: Mil Mi-24

text: The war in Afghanistan brought with it losses by attrition. The environment itself, dusty and often hot, was rough on the machines; dusty conditions led to the development of the twin PZU ('PyleZashchitnoe Ustroystvo') air intake filters. The rebels' primary air-defence weapons early in the war were heavy machine guns and anti-aircraft cannons, though anything smaller than a 23 millimetre shell generally did not do much damage to an Mi-24. The cockpit glass panels were resistant to 12.7 mm (.50 in calibre) rounds.


title: Mil Mi-24

text: The rebels also quickly began to use Soviet-made and US shoulder-launched, man-portable air-defense system (MANPADS) missiles such as the Strela and Redeye which had either been captured from the Soviets or their Afghan allies or were supplied from Western sources. Many of them came from stocks that the Israelis had captured during wars with Soviet backed states in the Middle East. Owing to a combination of the limited capabilities of these early types of missiles, poor training and poor material condition of the missiles, they were not particularly effective. Instead, the RPG-7, originally developed as an antitank weapon, was the first effective countermeasure to the Hind. The RPG-7, not designed for air defence, had inherent shortcomings in this role. When fired at the angles needed to hit aerial targets, the back-blast could easily wound the shooter, and the inevitable cloud of smoke and dust made it easy for gunners to spot the shooter's position.


title: Mil Mi-24

text: From 1986, the CIA began supplying the Afghan rebels with newer Stinger shoulder-launched, heat-seeking SAMs. These were a marked improvement over earlier weapons. Unlike the Redeye and SA-7, which only locked on onto infrared emissions, the Stinger could lock onto both infrared and ultraviolet emissions. This enabled the operator to engage an aircraft from all angles rather than just the tail and made it significantly more resistant to countermeasures like flares. In addition the Mil helicopters, particularly the Mi-24, suffered from a design flaw in the configuration of their engines that made them highly vulnerable to the Stinger. The Mi-24, along with the related Mi-8 and Mi-17 helicopters, had its engines placed in an inline configuration in an attempt to streamline the helicopter to increase speed and minimize the aircraft's overall frontal profile to incoming fire in a head on attack. However this had the opposite effect of leaking all the exhaust gasses from the Mi-24's engines directly out the side of the aircraft and away from the helicopter's rotor wash, creating two massive sources of heat and ultraviolet radiation for the Stinger to lock onto. The inline placement of the engines was seen as so problematic in this regard that Mil designers abandoned the configuration on the planned successor to the Mi-24, the Mil Mi-28, in favour of an engine placement more akin to Western attack helicopters which vents the exhaust gasses into the helicopter's main rotor wash to dissipate heat.


title: Mil Mi-24

text: Initially, the attack doctrine of the Mi-24 was to approach its target from high altitude and dive downwards. After the introduction of the Stinger, doctrine changed to "nap of the earth" flying, where they approached very low to the ground and engaged more laterally, popping up to only about in order to aim rockets or cannons. Countermeasure flares and missile warning systems would be installed in all Soviet Mil Mi-2, Mi-8, and Mi-24 helicopters, giving pilots a chance to evade missiles fired at them. Heat dissipation devices were also fitted to exhausts to decrease the Mi-24's heat signature. Tactical and doctrinal changes were introduced to make it harder for the enemy to deploy these weapons effectively. These reduced the Stinger threat, but did not eliminate it.


title: Mil Mi-24

text: Mi-24s were also used to shield jet transports flying in and out of Kabul from Stingers. The gunships carried flares to blind the heat-seeking missiles. The crews called themselves "Mandatory Matrosovs", after a Soviet hero of World War II who threw himself across a German machine gun to let his comrades break through.


title: Mil Mi-24

text: According to Russian sources, 74 helicopters were lost, including 27 shot down by Stinger and two by Redeye. In many cases, the helicopters with their armour and durable construction could withstand significant damage and able to return to base.


title: Mil Mi-24

text: Mi-24 crews carried AK-74 assault rifles and other hand-held weapons to give them a better chance of survival if forced down. Early in the war, Marat Tischenko, head of the Mil design bureau visited Afghanistan to see what the troops thought of his helicopters, and gunship crews put on several displays for him. They even demonstrated manoeuvres, such as barrel rolls, which design engineers considered impossible. An astounded Tischenko commented, "I thought I knew what my helicopters could do, now I'm not so sure!"


title: Mil Mi-24

text: The last Soviet Mi-24 shot down was during the night of 2 February 1989, with both crewmen killed. It was also the last Soviet helicopter lost during nearly 10 years of warfare.


title: Mil Mi-24

text: Mi-24s passed on to Soviet-backed Afghan forces during the war remained in dwindling service in the grinding civil war that continued after the Soviet withdrawal.


title: Mil Mi-24

text: Afghan Air Force Mi-24s in the hands of the ascendant Taliban gradually became inoperable, but a few flown by the Northern Alliance, which had Russian assistance and access to spares, remained operational up to the US invasion of Afghanistan in late 2001. In 2008, the Afghan Air Force took delivery of six refurbished Mi-35 helicopters, purchased from the Czech Republic. The Afghan pilots were trained by India and began live firing exercises in May 2009 in order to escort Mi-17 transport helicopters on operations in restive parts of the country.


title: Mil Mi-24

text: The Mi-25 saw considerable use by the Iraqi Army during the long war against Iran. Its heavy armament caused severe losses to Iranian ground forces during the war. However, the Mi-25 lacked an effective anti-tank capability, as it was only armed with obsolete 9M17 Skorpion missiles. This led the Iraqis to develop new gunship tactics, with help from East German advisors. The Mi-25s would form "hunter-killer" teams with French-built Aérospatiale Gazelles, with the Mi-25s leading the attack and using their massive firepower to suppress Iranian air defences, and the Gazelles using their HOT missiles to engage armoured fighting vehicles. These tactics proved effective in halting Iranian offensives, such as Operation Ramadan in July 1982.


title: Mil Mi-24

text: This war also saw the only confirmed air-to-air helicopter battles in history with the Iraqi Mi-25s flying against Iranian AH-1J SeaCobras (supplied by the United States before the Iranian Revolution) on several separate occasions. In November 1980, not long after Iraq's initial invasion of Iran, two Iranian SeaCobras engaged two Mi-25s with TOW wire-guided antitank missiles. One Mi-25 went down immediately, the other was badly damaged and crashed before reaching base. The Iranians repeated this accomplishment on 24 April 1981, destroying two Mi-25s without incurring losses to themselves. One Mi-25 was also downed by an IRIAF F-14A.


title: Mil Mi-24

text: The Iraqis hit back, claiming the destruction of a SeaCobra on 14 September 1983 (with YaKB machine gun), then three SeaCobras on 5 February 1984 and three more on 25 February 1984 (two with Falanga missiles, one with S-5 rockets). A 1982 news article published on the Iraqi Observer claimed an Iraqi Mi-24D shot down an Iranian F-4 Phantom II using its armaments, either antitank missiles, guns or S-5 unguided rockets. This claim was later debunked.


title: Mil Mi-24

text: After a lull in helicopter losses, each side lost a gunship on 13 February 1986. Later, a Mi-25 claimed a SeaCobra shot down with YaKB gun on 16 February, and a SeaCobra claimed a Mi-25 shot down with rockets on 18 February. The last engagement between the two types was on 22 May 1986, when Mi-25s shot down a SeaCobra. The final claim tally was 10 SeaCobras and 6 Mi-25s destroyed. The relatively small numbers and the inevitable disputes over actual kill numbers makes it unclear if one gunship had a real technical superiority over the other. Iraqi Mi-25s also claimed 43 kills against other Iranian helicopters, such as Agusta-Bell UH-1 Hueys.


title: Mil Mi-24

text: In general, the Iraqi pilots liked the Mi-25, in particular for its high speed, long range, high versatility and large weapon load, but disliked the relatively ineffectual anti-tank guided weapons and lack of agility. The Mi-25 was also used by Iraq in chemical warfare against Iranians and Kurdish civilians in Halabja.


title: Mil Mi-24

text: Mi-25s were also used by the Nicaraguan Army during the civil war of the 1980s. Nicaragua received 12 Mi-25s (some sources claim 18) in the mid-1980s to deal with "Contra" insurgents. The Mi-25s performed ground attacks on the Contras and were also fast enough to intercept light aircraft being used by the insurgents. The U.S. Reagan Administration regarded introduction of the Mi-25s as a major escalation of tensions in Central America.


title: Mil Mi-24

text: Two Mi-25s were shot down by Stingers fired by the Contras. A third Mi-25 was damaged while pursuing Contras near the Honduran border, when it was intercepted by Honduran F-86 Sabres and A-37 Dragonflies. A fourth was flown to Honduras by a defecting Sandinista pilot in December 1988.


title: Mil Mi-24

text: The Indian Peace Keeping Force (1987–90) in Sri Lanka used Mi-24s when an Indian Air Force detachment was deployed there in support of the Indian and Sri Lankan armed forces in their fight against various Tamil militant groups such as the Liberation Tigers of Tamil Eelam (LTTE). It is believed that Indian losses were considerably reduced by the heavy fire support from their Mi-24s. The Indians lost no Mi-24s in the operation, as the Tigers had no weapons capable of downing the gunship at the time.


title: Mil Mi-24

text: Since 14 November 1995, the Mi-24 has been used by the Sri Lanka Air Force in the war against the LTTE liberation group and has proved highly effective at providing close air support for ground forces. The Sri Lanka Air Force operates a mix of Mi-24/-35P and Mi-24V/-35 versions attached to its No. 9 Attack Helicopter Squadron. They have recently been upgraded with modern Israeli FLIR and electronic warfare systems. Five were upgraded to intercept aircraft by adding radar, fully functional helmet mounted target tracking systems, and AAMs. More than five Mi-24s have been lost to LTTE MANPADS, and another two lost in attacks on air bases, with one heavily damaged but later returned to service.


title: Mil Mi-24

text: The Peruvian Air Force received 12 Mi-25Ds and 2 Mi-25DU from the Soviets in 1983, 1984, and 1985 after ordering them in the aftermath of 1981 Paquisha conflict with Ecuador. Seven more second hand units (4 Mi-24D and 3 Mi-25D) were obtained from Nicaragua in 1992. These have been permanently based at the Vitor airbase near La Joya ever since, operated by the 2nd Air Group of the 211th Air Squadron. Their first deployment occurred in June 1989 during the war against Communist guerrillas in the Peruvian highlands, mainly against Shining Path. Despite the conflict continuing, it has decreased in scale and is now limited to the jungle areas of Valley of Rivers Apurímac, Ene and Mantaro (VRAEM).


title: Mil Mi-24

text: The Mi-24 was also heavily employed by the Iraqi Army during their invasion of Kuwait, although most were withdrawn by Saddam Hussein when it became apparent that they would be needed to help retain his grip on power in the aftermath of the war. In the ensuing 1991 uprisings in Iraq, these helicopters were used against dissidents as well as fleeing civilian refugees.


title: Mil Mi-24

text: Three Mi-24Vs owned by Sierra Leone and flown by South African military contractors, including Neall Ellis, were used against RUF rebels. In 1995, they helped drive the RUF from the capital, Freetown. Neall Ellis also piloted a Mi-24 during the British-led Operation Barras against West Side Boys. Guinea also used its Mi-24s against the RUF on both sides of the border and was alleged to have provided air support to the LURD insurgency in northern Liberia in 2001–03.


title: Mil Mi-24

text: Twelve Mi-24s were delivered to Croatia in 1993, and were used effectively in 1995 by the Croatian Army in Operation Storm against the Army of Krajina. The Mi-24 was used to strike deep into enemy territory and disrupt Krajina army communications. One Croatian Mi-24 crashed near the city of Drvar, Bosnia and Herzegovina due to strong winds. Both the pilot and the operator survived. The Mi-24s used by Croatia were obtained from Ukraine. One Mi-24 was modified to carry Mark 46 torpedoes. The helicopters were withdrawn from service in 2004.


title: Mil Mi-24

text: During the First and Second Chechen Wars, beginning in 1994 and 1999 respectively, Mi-24s were employed by the Russian armed forces.


title: Mil Mi-24

text: In the first year of the Second Chechen War, 11 Mi-24s were lost by Russian forces, about half of which were lost as a result of enemy action.


title: Mil Mi-24

text: Peru employed Mi-25s against Ecuadorian forces during the short Cenepa conflict in early 1995. The only loss occurred on 7 February, when a FAP Mi-25 was downed after being hit in quick succession by at least two, probably three, 9K38 Igla shoulder-fired missiles during a low-altitude mission over the Cenepa valley. The three crewmen were killed.


title: Mil Mi-24

text: In 1995, the Sudanese Air Force acquired six Mi-24s for use in Southern Sudan and the Nuba mountains to engage the SPLA. At least two aircraft were lost in non-combat situations within the first year of operation. A further twelve were bought in 2001, and used extensively in the oil fields of Southern Sudan. Mi-24s were also deployed to Darfur in 2004–5.


title: Mil Mi-24

text: Three Mi-24s were used by Mobutu's army and were later acquired by the new Air Force of the Democratic Republic of the Congo. These were supplied to Zaire in 1997 as part of a French-Serbian contract. At least one was flown by Serbian mercenaries. One hit a power line and crashed on 27 March 1997, killing the three crew and four passengers. Zimbabwean Mi-24s were also operated in coordination with the Congolese Army.


title: Mil Mi-24

text: The United Nations peacekeeping mission employed Indian Air Force Mi-24/-35 helicopters to provide support during the Second Congo War. The IAF has been operating in the region since 2003.


title: Mil Mi-24

text: Two second-hand Mi-24Vs procured from Ukraine earlier in the 1990s were used by the Yugoslav Special Operation Unit (JSO) against Kosovo Albanian rebels during the Kosovo War.


title: Mil Mi-24

text: The North Macedonian military acquired used Ukrainian Mi-24Vs, which were then used frequently against Albanian insurgents during the 2001 insurgency in Macedonia (now North Macedonia). The main areas of action were in Tetovo, Radusha and Aracinovo.


title: Mil Mi-24

text: During the Ivorian Civil War, five Mil Mi-24s piloted by mercenaries were used in support of government forces. They were later destroyed by the French Army in retaliation for an air attack on a French base that killed nine soldiers.


title: Mil Mi-24

text: In 2008 and 2009, the Czech Republic donated six Mi-24s under the ANA Equipment Donation Programme. As a result, the Afghan National Army Air Corps (ANAAC) gained the ability to escort its own helicopters with heavily armed attack helicopters. ANAAC operates nine Mi-35s. Major Caleb Nimmo, a United States Air Force Pilot, was the first American to fly the Mi-35 Hind, or any Russian helicopter, in combat. On 13 September 2011, a Mi-35 of the Afghan Air Force was used to hold back an attack on ISAF and police buildings.


title: Mil Mi-24

text: The Polish Helicopter Detachment contributed Mi-24s to the International Security Assistance Force (ISAF). The Polish pilots trained in Germany before deploying to Afghanistan and train with U.S. service personnel. On 26 January 2011, one Mi-24 caught on fire during take-off from its base in Ghazni. One American and four Polish soldiers evacuated unharmed.


title: Mil Mi-24

text: India has also donated Mi-35s to Afghanistan. Four helicopters were to be supplied, with three already transferred in January 2016. The three Mi-35s made a big difference in the offensive against militants, according to General John Campbell, commander of US forces in Afghanistan.


title: Mil Mi-24

text: The Polish contingent in Iraq used six Mi-24Ds after December 2004. One of them crashed on 18 July 2006 in an air base in Al Diwaniyah. Polish Mi-24Ds used in Iraq were not returned to Poland due to their age, condition, low combat value of the Mi-24D variant, and high shipping costs; depending on their condition, they were transferred to the new Iraqi Army or scrapped.


title: Mil Mi-24

text: The Ethiopian Air Force operated about three Mil Mi-35 and ten Mil Mi-24D helicopter gunships in the Somali theatre. One was shot down near Mogadishu International Airport on 30 March 2007 by Somali insurgents.


title: Mil Mi-24

text: Mil Mi-24s were used by both sides during the fighting in South Ossetia. During the war Georgian Air Force Mi-24s attacked their first targets on an early morning hour of 8 August, targeting the Ossetian presidential palace. The second target was a cement factory near Tskhinval, where major enemy forces and ammunition were located. The last combat mission of the GAF Mi-24s was on 11 August, when a large Russian convoy, consisting of light trucks and BMP IFVs which were heading to the Georgian village of Avnevi was targeted by Mi-24s, completely destroying the convoy. The Georgian Air Force lost 2 Mi-24s on Senaki air base. They were destroyed by Russian troops on the ground. Both helicopters were in-operational. The Russian army heavily used Mi-24s in the conflict. Russian upgraded Mi-24PNs were credited for destroying 2 Georgian T-72SIM1 tanks, using guided missiles at night time, though some sources attribute those kills to Mil Mi-28. The Russian army did not lose any Mi-24s throughout the conflict, mainly because those helicopters were deployed to areas where Georgian air defence was not active, though some were damaged by small arms fire and at least one Mi-24 was lost due to technical reasons.


title: Mil Mi-24

text: On returning to Abeche, one of the Chadian Mi-35s made a forced landing at the airport. It was claimed that it was shot down by rebels.


title: Mil Mi-24

text: The Libyan Air Force Mi-24s were used by both sides to attack enemy positions during the 2011 Libyan civil war. A number were captured by the rebels, who formed the Free Libyan Air Force together with other captured air assets. During the battle for Benina airport, one Mi-35 (serial number 853), was destroyed on the ground on 23 February 2011. In the same action, serial number 854 was captured by the rebels together with an Mi-14 (serial number 1406). Two Mi-35s operating for the pro-Gaddafi Libyan Air Force were destroyed on the ground on 26 March 2011 by French aircraft enforcing the no-fly zone. One Free Libyan Air Force Mi-25D (serial number 854, captured at the beginning of the revolt) violated the no-fly-zone on 9 April 2011 to strike loyalist positions in Ajdabiya. It was shot down by Libyan ground forces during the action. The pilot, Captain Hussein Al-Warfali, died in the crash. The rebels claimed that a number of other Mi-25s were shot down.


title: Mil Mi-24

text: Ukrainian army Mi-24P helicopters as part of the United Nations peacekeeping force fired four missiles at a pro-Gbagbo military camp in Ivory Coast's main city of Abidjan.


title: Mil Mi-24

text: The Syrian Air Force have used Mi-24s to attack rebels throughout Syria, including many of the nation's major cities. Controversy has surrounded an alleged delivery of Mi-25s to the Syrian military, due to Turkey and other NATO members disallowing such arms shipments through their territory.


title: Mil Mi-24

text: On 3 November 2016, a Russian Mi-35 made an emergency landing near Syria's Palmyra city, and was hit and destroyed, most likely by an unguided recoilless weapon after it touched down. The crew returned safely to the Khmeimim air base.


title: Mil Mi-24

text: Two Mi-35 helicopters were shot down by the Kachin Independence Army during the heavy fighting in the mountains of northern Burma in 2012 and early 2013.


title: Mil Mi-24

text: On 3 May 2021, in the morning, a Myanmar Air Force Mi-35 was shot down by the Kachin Independence Army, hit by a MANPADS during air raids involving attack helicopters and fighter jets. A video emerged showing the helicopter being hit while flying over a village.


title: Mil Mi-24

text: Iraq ordered a total of 34 Mi-35Ms in 2013, as part of an arms deal with Russia that also included Mi-28 attack helicopters. The delivery of the first four was announced by then-Prime Minister Nuri al-Maliki in November 2013.


title: Mil Mi-24

text: Their first deployment began in late December against camps of the al-Qaeda linked Islamic State of Iraq and the Levant (ISIL) and several Islamist militants in the al-Anbar province that had taken control of several areas of Fallujah and Ramadi. FLIR footage of the strikes has been released by the military.


title: Mil Mi-24

text: On 3 October 2014, ISIL militants reportedly used a FN-6 shoulder-launched missile in Baiji to shoot down an Iraqi Army Mi-35M attack helicopter. Video footage released by ISIL militants shows at least another two Iraqi Mi-35s brought down by light anti-aircraft artillery.


title: Mil Mi-24

text: In 2018, Pakistan received 4 Mi-35M Hind-E Gunships from Russia under the $153 million deal. They are now stationed at the Army Aviation Corps base at Quetta Cantonment. The gunships have since been used in several counter insurgency operations against various militant groups in the Balochistan province of Pakistan.


title: Mil Mi-24

text: In early 2022, a base in Nushki and a check-post in Panjgur belonging to the Frontier Corps Balochistan Paramilitary were attacked by BLA terrorists. The attack in Nushki was swiftly repulsed but the situation in Panjgaur was not good to which Mi-35 Hind and AH-1F Cobra gunships were called in for support. It provided much needed ground support and reconnaissance in the counter offensive which led to success.


title: Mil Mi-24

text: During the annexation of the Crimean Peninsula, Russia deployed 13 Mi-24s to support their infantry as they advanced through the region. However these aircraft saw no combat during their deployment.


title: Mil Mi-24

text: During the Siege of Sloviansk, on 2 May 2014, two Ukrainian Mi-24s were shot down by pro-Russian insurgents. The Ukrainian armed forces claim that they were downed by MANPADS while on patrol close to Slavyansk. The Ukrainian government confirmed that both aircraft were shot down, along with an Mi-8 damaged by small arms fire. Initial reports mentioned two dead and others wounded; later, five crew members were confirmed dead and one taken prisoner until being released on 5 May.


title: Mil Mi-24

text: On 5 May 2014, another Ukrainian Mi-24 was forced to make an emergency landing after being hit by machine gun fire while on patrol close to Slavyansk. The Ukrainian forces recovered the two pilots and destroyed the helicopter with a rocket strike by an Su-25 aircraft to prevent its capture by pro-Russian insurgents.


title: Mil Mi-24

text: Ukrainian Sukhoi Su-25 attack aircraft, with MiG-29 fighters providing top cover, supported Mi-24s during the battle for Donetsk Airport.


title: Mil Mi-24

text: On 12 November 2014, Azerbaijani forces shot down an Armenian forces Mi-24 from a formation of two which were flying along the disputed border, close to the frontline between Azerbaijani and Armenian troops in the disputed Karabakh territory. The helicopter was hit by an Igla-S shoulder-launched missile fired by Azerbaijani soldiers while flying at low altitude and crashed, killing all three on board.


title: Mil Mi-24

text: On 2 April 2016, during a clash between Azerbaijani and Armenian forces, an Azerbaijani Mi-24 helicopter was shot down by "Nagorno-Karabakh" forces. The downing was confirmed by the Azerbaijani defence ministry.


title: Mil Mi-24

text: On 9 November 2020, during the Nagorno-Karabakh war a Russian Mi-24 was shot down by Azerbaijani forces with a MANPADS. The Azerbaijan Foreign Ministry stated that the downing was an accident. Two crew members were killed and one sustained moderate injuries. The Russian defence ministry confirmed the downing in a press release the same day.


title: Mil Mi-24

text: During the 2022 Russian invasion of Ukraine, on 1 March, Ukrainian forces shot down a Russian Mi-35M helicopter with MANPADS, in the Kyiv Reservoir (see also Battle of Kyiv). On 5 May 2022, the helicopter was retrieved by Ukrainian engineers in Vyshgorod. Two Russian Mi-35 were shot down by a MANPADS on 5 March 2022. On 6 March, one Mi-24P with registration number "RF-94966" was shot down by Ukrainian MANPADS in Kyiv Oblast. On 8 March 2022 one Ukrainian Mil Mi-24 from the was lost over Brovary, Kyiv. Pilots Col. Oleksandr Maryniak and Cptn. Ivan Bezzub were killed. On 17 March a Russian Mi-35M was reportedly destroyed by Ukrainian Ministry of Defence, unknown location. On 1 April 2022, two Ukrainian Mi-24s reportedly entered Russia and attacked an oil storage facility in Belgorod.


title: Computer science

text: Computer science is the study of computation, automation, and information. Computer science spans theoretical disciplines (such as algorithms, theory of computation, information theory, and automation) to practical disciplines (including the design and implementation of hardware and software). Computer science is generally considered an area of academic research and distinct from computer programming.


title: Computer science

text: The theory of computation concerns abstract models of computation and general classes of problems that can be solved using them. The fields of cryptography and computer security involve studying the means for secure communication and for preventing security vulnerabilities. Computer graphics and computational geometry address the generation of images. Programming language theory considers different ways to describe computational processes, and database theory concerns the management of repositories of data. Human–computer interaction investigates the interfaces through which humans and computers interact, and software engineering focuses on the design and principles behind developing software. Areas such as operating systems, networks and embedded systems investigate the principles and design behind complex systems. Computer architecture describes the construction of computer components and computer-operated equipment. Artificial intelligence and machine learning aim to synthesize goal-orientated processes such as problem-solving, decision-making, environmental adaptation, planning and learning found in humans and animals. Within artificial intelligence, computer vision aims to understand and process image and video data, while natural language processing aims to understand and process textual and linguistic data.


title: Computer science

text: The fundamental concern of computer science is determining what can and cannot be automated. The Turing Award is generally recognized as the highest distinction in computer science.


title: Computer science

text: The earliest foundations of what would become computer science predate the invention of the modern digital computer. Machines for calculating fixed numerical tasks such as the abacus have existed since antiquity, aiding in computations such as multiplication and division. Algorithms for performing computations have existed since antiquity, even before the development of sophisticated computing equipment.


title: Computer science

text: Wilhelm Schickard designed and constructed the first working mechanical calculator in 1623. In 1673, Gottfried Leibniz demonstrated a digital mechanical calculator, called the Stepped Reckoner. Leibniz may be considered the first computer scientist and information theorist, because of various reasons, including the fact that he documented the binary number system. In 1820, Thomas de Colmar launched the mechanical calculator industry when he invented his simplified arithmometer, the first calculating machine strong enough and reliable enough to be used daily in an office environment. Charles Babbage started the design of the first "automatic mechanical calculator", his Difference Engine, in 1822, which eventually gave him the idea of the first "programmable mechanical calculator", his Analytical Engine. He started developing this machine in 1834, and "in less than two years, he had sketched out many of the salient features of the modern computer". "A crucial step was the adoption of a punched card system derived from the Jacquard loom" making it infinitely programmable. In 1843, during the translation of a French article on the Analytical Engine, Ada Lovelace wrote, in one of the many notes she included, an algorithm to compute the Bernoulli numbers, which is considered to be the first published algorithm ever specifically tailored for implementation on a computer. Around 1885, Herman Hollerith invented the tabulator, which used punched cards to process statistical information; eventually his company became part of IBM. Following Babbage, although unaware of his earlier work, Percy Ludgate in 1909 published the 2nd of the only two designs for mechanical analytical engines in history. In 1937, one hundred years after Babbage's impossible dream, Howard Aiken convinced IBM, which was making all kinds of punched card equipment and was also in the calculator business to develop his giant programmable calculator, the ASCC/Harvard Mark I, based on Babbage's Analytical Engine, which itself used cards and a central computing unit. When the machine was finished, some hailed it as "Babbage's dream come true".


title: Computer science

text: During the 1940s, with the development of new and more powerful computing machines such as the Atanasoff–Berry computer and ENIAC, the term "computer" came to refer to the machines rather than their human predecessors. As it became clear that computers could be used for more than just mathematical calculations, the field of computer science broadened to study computation in general. In 1945, IBM founded the Watson Scientific Computing Laboratory at Columbia University in New York City. The renovated fraternity house on Manhattan's West Side was IBM's first laboratory devoted to pure science. The lab is the forerunner of IBM's Research Division, which today operates research facilities around the world. Ultimately, the close relationship between IBM and Columbia University was instrumental in the emergence of a new scientific discipline, with Columbia offering one of the first academic-credit courses in computer science in 1946. Computer science began to be established as a distinct academic discipline in the 1950s and early 1960s. The world's first computer science degree program, the Cambridge Diploma in Computer Science, began at the University of Cambridge Computer Laboratory in 1953. The first computer science department in the United States was formed at Purdue University in 1962. Since practical computers became available, many applications of computing have become distinct areas of study in their own rights.


title: Computer science

text: Although first proposed in 1956, the term "computer science" appears in a 1959 article in "Communications of the ACM",


title: Computer science

text: in which Louis Fein argues for the creation of a "Graduate School in Computer Sciences" analogous to the creation of Harvard Business School in 1921. Louis justifies the name by arguing that, like management science, the subject is applied and interdisciplinary in nature, while having the characteristics typical of an academic discipline.


title: Computer science

text: His efforts, and those of others such as numerical analyst George Forsythe, were rewarded: universities went on to create such departments, starting with Purdue in 1962. Despite its name, a significant amount of computer science does not involve the study of computers themselves. Because of this, several alternative names have been proposed. Certain departments of major universities prefer the term "computing science", to emphasize precisely that difference. Danish scientist Peter Naur suggested the term "datalogy", to reflect the fact that the scientific discipline revolves around data and data treatment, while not necessarily involving computers. The first scientific institution to use the term was the Department of Datalogy at the University of Copenhagen, founded in 1969, with Peter Naur being the first professor in datalogy. The term is used mainly in the Scandinavian countries. An alternative term, also proposed by Naur, is data science; this is now used for a multi-disciplinary field of data analysis, including statistics and databases.


title: Computer science

text: In the early days of computing, a number of terms for the practitioners of the field of computing were suggested in the "Communications of the ACM"—"turingineer", "turologist", "flow-charts-man", "applied meta-mathematician", and "applied epistemologist". Three months later in the same journal, "comptologist" was suggested, followed next year by "hypologist". The term "computics" has also been suggested. In Europe, terms derived from contracted translations of the expression "automatic information" (e.g. "informazione automatica" in Italian) or "information and mathematics" are often used, e.g. "informatique" (French), "Informatik" (German), "informatica" (Italian, Dutch), "informática" (Spanish, Portuguese), "informatika" (Slavic languages and Hungarian) or "pliroforiki" ("πληροφορική", which means informatics) in Greek. Similar words have also been adopted in the UK (as in the School of Informatics, University of Edinburgh). "In the U.S., however, informatics is linked with applied computing, or computing in the context of another domain."


title: Computer science

text: A folkloric quotation, often attributed to—but almost certainly not first formulated by—Edsger Dijkstra, states that "computer science is no more about computers than astronomy is about telescopes." The design and deployment of computers and computer systems is generally considered the province of disciplines other than computer science. For example, the study of computer hardware is usually considered part of computer engineering, while the study of commercial computer systems and their deployment is often called information technology or information systems. However, there has been exchange of ideas between the various computer-related disciplines. Computer science research also often intersects other disciplines, such as cognitive science, linguistics, mathematics, physics, biology, Earth science, statistics, philosophy, and logic.


title: Computer science

text: Computer science is considered by some to have a much closer relationship with mathematics than many scientific disciplines, with some observers saying that computing is a mathematical science. Early computer science was strongly influenced by the work of mathematicians such as Kurt Gödel, Alan Turing, John von Neumann, Rózsa Péter and Alonzo Church and there continues to be a useful interchange of ideas between the two fields in areas such as mathematical logic, category theory, domain theory, and algebra.


title: Computer science

text: The relationship between Computer Science and Software Engineering is a contentious issue, which is further muddied by disputes over what the term "Software Engineering" means, and how computer science is defined. David Parnas, taking a cue from the relationship between other engineering and science disciplines, has claimed that the principal focus of computer science is studying the properties of computation in general, while the principal focus of software engineering is the design of specific computations to achieve practical goals, making the two separate but complementary disciplines.


title: Computer science

text: The academic, political, and funding aspects of computer science tend to depend on whether a department is formed with a mathematical emphasis or with an engineering emphasis. Computer science departments with a mathematics emphasis and with a numerical orientation consider alignment with computational science. Both types of departments tend to make efforts to bridge the field educationally if not across all research.


title: Computer science

text: Despite the word "science" in its name, there is debate over whether or not computer science is a discipline of science, mathematics, or engineering. Allen Newell and Herbert A. Simon argued in 1975, It has since been argued that computer science can be classified as an empirical science since it makes use of empirical testing to evaluate the correctness of programs, but a problem remains in defining the laws and theorems of computer science (if any exist) and defining the nature of experiments in computer science. Proponents of classifying computer science as an engineering discipline argue that the reliability of computational systems is investigated in the same way as bridges in civil engineering and airplanes in aerospace engineering. They also argue that while empirical sciences observe what presently exists, computer science observes what is possible to exist and while scientists discover laws from observation, no proper laws have been found in computer science and it is instead concerned with creating phenomena.


title: Computer science

text: Proponents of classifying computer science as a mathematical discipline argue that computer programs are physical realizations of mathematical entities and programs can be deductively reasoned through mathematical formal methods. Computer scientists Edsger W. Dijkstra and Tony Hoare regard instructions for computer programs as mathematical sentences and interpret formal semantics for programming languages as mathematical axiomatic systems.


title: Computer science

text: A number of computer scientists have argued for the distinction of three separate paradigms in computer science. Peter Wegner argued that those paradigms are science, technology, and mathematics. Peter Denning's working group argued that they are theory, abstraction (modeling), and design. Amnon H. Eden described them as the "rationalist paradigm" (which treats computer science as a branch of mathematics, which is prevalent in theoretical computer science, and mainly employs deductive reasoning), the "technocratic paradigm" (which might be found in engineering approaches, most prominently in software engineering), and the "scientific paradigm" (which approaches computer-related artifacts from the empirical perspective of natural sciences, identifiable in some branches of artificial intelligence).


title: Computer science

text: Computer science focuses on methods involved in design, specification, programming, verification, implementation and testing of human-made computing systems.


title: Computer science

text: As a discipline, computer science spans a range of topics from theoretical studies of algorithms and the limits of computation to the practical issues of implementing computing systems in hardware and software.


title: Computer science

text: CSAB, formerly called Computing Sciences Accreditation Board—which is made up of representatives of the Association for Computing Machinery (ACM), and the IEEE Computer Society (IEEE CS)—identifies four areas that it considers crucial to the discipline of computer science: "theory of computation", "algorithms and data structures", "programming methodology and languages", and "computer elements and architecture". In addition to these four areas, CSAB also identifies fields such as software engineering, artificial intelligence, computer networking and communication, database systems, parallel computation, distributed computation, human–computer interaction, computer graphics, operating systems, and numerical and symbolic computation as being important areas of computer science.


title: Computer science

text: "Theoretical Computer Science" is mathematical and abstract in spirit, but it derives its motivation from the practical and everyday computation. Its aim is to understand the nature of computation and, as a consequence of this understanding, provide more efficient methodologies.


title: Computer science

text: According to Peter Denning, the fundamental question underlying computer science is, "What can be automated?" Theory of computation is focused on answering fundamental questions about what can be computed and what amount of resources are required to perform those computations. In an effort to answer the first question, computability theory examines which computational problems are solvable on various theoretical models of computation. The second question is addressed by computational complexity theory, which studies the time and space costs associated with different approaches to solving a multitude of computational problems.


title: Computer science

text: The famous P = NP? problem, one of the Millennium Prize Problems, is an open problem in the theory of computation.


title: Computer science

text: Information theory, closely related to probability and statistics, is related to the quantification of information. This was developed by Claude Shannon to find fundamental limits on signal processing operations such as compressing data and on reliably storing and communicating data.


title: Computer science

text: Coding theory is the study of the properties of codes (systems for converting information from one form to another) and their fitness for a specific application. Codes are used for data compression, cryptography, error detection and correction, and more recently also for network coding. Codes are studied for the purpose of designing efficient and reliable data transmission methods.


title: Computer science

text: Data structures and algorithms are the studies of commonly used computational methods and their computational efficiency.


title: Computer science

text: Programming language theory is a branch of computer science that deals with the design, implementation, analysis, characterization, and classification of programming languages and their individual features. It falls within the discipline of computer science, both depending on and affecting mathematics, software engineering, and linguistics. It is an active research area, with numerous dedicated academic journals.


title: Computer science

text: Formal methods are a particular kind of mathematically based technique for the specification, development and verification of software and hardware systems. The use of formal methods for software and hardware design is motivated by the expectation that, as in other engineering disciplines, performing appropriate mathematical analysis can contribute to the reliability and robustness of a design. They form an important theoretical underpinning for software engineering, especially where safety or security is involved. Formal methods are a useful adjunct to software testing since they help avoid errors and can also give a framework for testing. For industrial use, tool support is required. However, the high cost of using formal methods means that they are usually only used in the development of high-integrity and life-critical systems, where safety or security is of utmost importance. Formal methods are best described as the application of a fairly broad variety of theoretical computer science fundamentals, in particular logic calculi, formal languages, automata theory, and program semantics, but also type systems and algebraic data types to problems in software and hardware specification and verification.


title: Computer science

text: Computer architecture, or digital computer organization, is the conceptual design and fundamental operational structure of a computer system. It focuses largely on the way by which the central processing unit performs internally and accesses addresses in memory. Computer engineers study computational logic and design of computer hardware, from individual processor components, microcontrollers, personal computers to supercomputers and embedded systems. The term "architecture" in computer literature can be traced to the work of Lyle R. Johnson and Frederick P. Brooks, Jr., members of the Machine Organization department in IBM's main research center in 1959.


title: Computer science

text: Concurrency is a property of systems in which several computations are executing simultaneously, and potentially interacting with each other. A number of mathematical models have been developed for general concurrent computation including Petri nets, process calculi and the Parallel Random Access Machine model. When multiple computers are connected in a network while using concurrency, this is known as a distributed system. Computers within that distributed system have their own private memory, and information can be exchanged to achieve common goals.


title: Computer science

text: Computer security is a branch of computer technology with the objective of protecting information from unauthorized access, disruption, or modification while maintaining the accessibility and usability of the system for its intended users.


title: Computer science

text: Historical cryptography is the art of writing and deciphering secret messages. Modern cryptography is the scientific study of problems relating to distributed computations that can be attacked. Technologies studied in modern cryptography include symmetric and asymmetric encryption, digital signatures, cryptographic hash functions, key-agreement protocols, blockchain, zero-knowledge proofs, and garbled circuits.


title: Computer science

text: A database is intended to organize, store, and retrieve large amounts of data easily. Digital databases are managed using database management systems to store, create, maintain, and search data, through database models and query languages. Data mining is a process of discovering patterns in large data sets.


title: Computer science

text: Artificial intelligence (AI) aims to or is required to synthesize goal-orientated processes such as problem-solving, decision-making, environmental adaptation, learning, and communication found in humans and animals. From its origins in cybernetics and in the Dartmouth Conference (1956), artificial intelligence research has been necessarily cross-disciplinary, drawing on areas of expertise such as applied mathematics, symbolic logic, semiotics, electrical engineering, philosophy of mind, neurophysiology, and social intelligence. AI is associated in the popular mind with robotic development, but the main field of practical application has been as an embedded component in areas of software development, which require computational understanding. The starting point in the late 1940s was Alan Turing's question "Can computers think?", and the question remains effectively unanswered, although the Turing test is still used to assess computer output on the scale of human intelligence. But the automation of evaluative and predictive tasks has been increasingly successful as a substitute for human monitoring and intervention in domains of computer application involving complex real-world data.


title: Computer science

text: Computer graphics is the study of digital visual contents and involves the synthesis and manipulation of image data. The study is connected to many other fields in computer science, including computer vision, image processing, and computational geometry, and is heavily applied in the fields of special effects and video games.


title: Computer science

text: Information can take the form of images, sound, video or other multimedia. Bits of information can be streamed via signals. Its processing is the central notion of informatics, the European view on computing, which studies information processing algorithms independently of the type of information carrier - whether it is electrical, mechanical or biological. This field plays important role in information theory, telecommunications, information engineering and has applications in medical image computing and speech synthesis, among others. "What is the lower bound on the complexity of fast Fourier transform algorithms?" is one of unsolved problems in theoretical computer science.


title: Computer science

text: Scientific computing (or computational science) is the field of study concerned with constructing mathematical models and quantitative analysis techniques and using computers to analyze and solve scientific problems. A major usage of scientific computing is simulation of various processes, including computational fluid dynamics, physical, electrical, and electronic systems and circuits, as well as societies and social situations (notably war games) along with their habitats, among many others. Modern computers enable optimization of such designs as complete aircraft. Notable in electrical and electronic circuit design are SPICE, as well as software for physical realization of new (or modified) designs. The latter includes essential design software for integrated circuits.


title: Computer science

text: Social computing is an area that is concerned with the intersection of social behavior and computational systems. Human–computer interaction research develops theories, principles, and guidelines for user interface designers.


title: Computer science

text: Software engineering is the study of designing, implementing, and modifying the software in order to ensure it is of high quality, affordable, maintainable, and fast to build. It is a systematic approach to software design, involving the application of engineering practices to software. Software engineering deals with the organizing and analyzing of software—it doesn't just deal with the creation or manufacture of new software, but its internal arrangement and maintenance. For example software testing, systems engineering, technical debt and software development processes.


title: Computer science

text: Programming languages can be used to accomplish different tasks in different ways. Common programming paradigms include:


title: Computer science

text: Many languages offer support for multiple paradigms, making the distinction more a matter of style than of technical capabilities.


title: Computer science

text: Conferences are important events for computer science research. During these conferences, researchers from the public and private sectors present their recent work and meet. Unlike in most other academic fields, in computer science, the prestige of conference papers is greater than that of journal publications. One proposed explanation for this is the quick development of this relatively new field requires rapid review and distribution of results, a task better handled by conferences than by journals.


title: Computer science

text: Computer Science, known by its near synonyms, Computing, Computer Studies, has been taught in UK schools since the days of batch processing, mark sensitive cards and paper tape but usually to a select few students. In 1981, the BBC produced a micro-computer and classroom network and Computer Studies became common for GCE O level students (11–16-year-old), and Computer Science to A level students. Its importance was recognised, and it became a compulsory part of the National Curriculum, for Key Stage 3 & 4. In September 2014 it became an entitlement for all pupils over the age of 4.


title: Computer science

text: In the US, with 14,000 school districts deciding the curriculum, provision was fractured. According to a 2010 report by the Association for Computing Machinery (ACM) and Computer Science Teachers Association (CSTA), only 14 out of 50 states have adopted significant education standards for high school computer science. According to a 2021 report, only 51% of high schools in the US offer computer science.


title: Computer science

text: Israel, New Zealand, and South Korea have included computer science in their national secondary education curricula, and several others are following.


title: British Army

text: The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurkhas, and 28,330 volunteer reserve personnel.


title: British Army

text: The modern British Army traces back to 1707, with antecedents in the English Army and Scots Army that were created during the Restoration in 1660. The term "British Army" was adopted in 1707 after the Acts of Union between England and Scotland. Members of the British Army swear allegiance to the monarch as their commander-in-chief, but the Bill of Rights of 1689 and Claim of Right Act 1689 require parliamentary consent for the Crown to maintain a peacetime standing army. Therefore, Parliament approves the army by passing an Armed Forces Act at least once every five years. The army is administered by the Ministry of Defence and commanded by the Chief of the General Staff.


title: British Army

text: The British Army, composed primarily of cavalry and infantry, was originally one of two "Regular" Forces within the British military (those parts of the British Armed Forces tasked with land warfare, as opposed to the naval forces), with the other having been the "Ordnance Military Corps" (made up of the Royal Artillery, Royal Engineers, and the Royal Sappers and Miners) of the Board of Ordnance, which along with the originally civilian Commissariat Department, stores and supply departments, as well as barracks and other departments were absorbed into the British Army when the Board of Ordnance was abolished in 1855. Various other civilian departments of the board were absorbed into the War Office.


title: British Army

text: The British Army has seen action in major wars between the world's great powers, including the Seven Years' War, the American Revolutionary War, the Napoleonic Wars, the Crimean War and the First and Second World Wars. Britain's victories in most of these decisive wars allowed it to influence world events and establish itself as one of the world's leading military and economic powers. Since the end of the Cold War, the British Army has been deployed to a number of conflict zones, often as part of an expeditionary force, a coalition force or part of a United Nations peacekeeping operation.


title: British Army

text: Until the English Civil War, England never had a standing army with professional officers and careerist corporals and sergeants. It relied on militia organised by local officials or private forces mobilised by the nobility, or on hired mercenaries from Europe. From the later Middle Ages until the English Civil War, when a foreign expeditionary force was needed, such as the one that Henry V of England took to France and that fought at the Battle of Agincourt (1415), the army, a professional one, was raised for the duration of the expedition.


title: British Army

text: During the English Civil War, the members of the Long Parliament realised that the use of county militia organised into regional associations (such as the Eastern Association), often commanded by local members of parliament (both from the House of Commons and the House of Lords), while more than able to hold their own in the regions which Parliamentarians controlled, were unlikely to win the war. So Parliament initiated two actions. The Self-denying Ordinance forbade members of parliament (with the notable exception of Oliver Cromwell) from serving as officers in the Parliamentary armies. This created a distinction between the civilians in Parliament, who tended to be Presbyterian and conciliatory to the Royalists in nature, and a corps of professional officers, who tended to be Independent (Congregational) in theology, to whom they reported. The second action was legislation for the creation of a Parliamentary-funded army, commanded by Lord General Thomas Fairfax, which became known as the New Model Army (originally new-modelled Army).


title: British Army

text: While this proved to be a war-winning formula, the New Model Army, being organised and politically active, went on to dominate the politics of the Interregnum and by 1660 was widely disliked. The New Model Army was paid off and disbanded at the Restoration of the monarchy in 1660. For many decades the alleged excesses of the New Model Army under the Protectorate of Oliver Cromwell were used as propaganda (and still feature in Irish folklore) and the Whig element recoiled from allowing a standing army. The militia acts of 1661 and 1662 prevented local authorities from calling up militia and oppressing their own local opponents. Calling up the militia was possible only if the king and local elites agreed to do so.


title: British Army

text: Charles II and his Cavalier supporters favoured a new army under royal control, and immediately after the Restoration began working on its establishment. The first English Army regiments, including elements of the disbanded New Model Army, were formed between November 1660 and January 1661 and became a standing military force for England (financed by Parliament). The Royal Scots and Irish Armies were financed by the parliaments of Scotland and Ireland. Parliamentary control was established by the Bill of Rights 1689 and Claim of Right Act 1689, although the monarch continued to influence aspects of army administration until at least the end of the nineteenth century.


title: British Army

text: After the Restoration Charles II pulled together four regiments of infantry and cavalry, calling them his guards, at a cost of £122,000 from his general budget. This became the foundation of the permanent English Army. By 1685 it had grown to 7,500 soldiers in marching regiments, and 1,400 men permanently stationed in garrisons. A rebellion in 1685 allowed James II to raise the forces to 20,000 men. There were 37,000 in 1678 when England played a role in the closing stage of the Franco-Dutch War. After William and Mary's accession to the throne, England involved itself in the War of the Grand Alliance, primarily to prevent a French invasion restoring James II (Mary's father). In 1689, William III expanded the army to 74,000, and then to 94,000 in 1694. Parliament was very nervous and reduced the cadre to 7000 in 1697. Scotland and Ireland had theoretically separate military establishments, but they were unofficially merged with the English force.


title: British Army

text: By the time of the 1707 Acts of Union, many regiments of the English and Scottish armies were combined under one operational command and stationed in the Netherlands for the War of the Spanish Succession. Although all the regiments were now part of the new British military establishment, they remained under the old operational-command structure and retained much of the institutional ethos, customs and traditions of the standing armies created shortly after the restoration of the monarchy 47 years earlier. The order of seniority of the most-senior British Army line regiments is based on that of the English army. Although technically the Scots Royal Regiment of Foot was raised in 1633 and is the oldest Regiment of the Line, Scottish and Irish regiments were only allowed to take a rank in the English army on the date of their arrival in England (or the date when they were first placed on the English establishment). In 1694, a board of general officers was convened to decide the rank of English, Irish and Scots regiments serving in the Netherlands; the regiment which became known as the Scots Greys were designated the 4th Dragoons because there were three English regiments raised prior to 1688 when the Scots Greys were first placed in the English establishment. In 1713, when a new board of general officers was convened to decide the rank of several regiments, the seniority of the Scots Greys was reassessed and based on their June 1685 entry into England. At that time there was only one English regiment of dragoons, and the Scots Greys eventually received the British Army rank of 2nd Dragoons.


title: British Army

text: After 1700, British continental policy was to contain expansion by competing powers such as France and Spain. Although Spain was the dominant global power during the previous two centuries and the chief threat to England's early transatlantic ambitions, its influence was now waning. The territorial ambitions of the French, however, led to the War of the Spanish Succession and the Napoleonic Wars.


title: British Army

text: Although the Royal Navy is widely regarded as vital to the rise of the British Empire, the British Army played an important role in the formation of colonies, protectorates and dominions in the Americas, Africa, Asia, India and Australasia. British soldiers captured strategically important territories, and the army was involved in wars to secure the empire's borders and support friendly governments. Among these actions were the Seven Years' War, the American Revolutionary War, the Napoleonic Wars, the First and Second Opium Wars, the Boxer Rebellion, the New Zealand Wars, the Australian frontier wars, the Sepoy Rebellion of 1857, the first and second Boer Wars, the Fenian raids, the Irish War of Independence, interventions in Afghanistan (intended to maintain a buffer state between British India and the Russian Empire) and the Crimean War (to keep the Russian Empire at a safe distance by aiding Turkey). Like the English Army, the British Army fought the kingdoms of Spain, France (including the Empire of France) and the Netherlands for supremacy in North America and the West Indies. With native and provincial assistance, the army conquered New France in the North American theatre of the Seven Years' War and suppressed a Native American uprising in Pontiac's War. The British Army was defeated in the American Revolutionary War, losing the Thirteen Colonies but retaining The Canadas and The Maritimes as British North America, including Bermuda (originally part of Virginia, and which had been strongly sympathetic to the rebels early in the war).


title: British Army

text: Halifax, Nova Scotia and Bermuda were to become Imperial fortresses (although Bermuda, being safer from attack over water and impervious to attack overland, quickly became the most important in British North America), along with Malta and Gibraltar, providing bases for Royal Navy squadrons to control the oceans, and heavily garrisoned by the British Army both for defence of the bases and to provide military forces to work with the navy in amphibious operations throughout their regions.


title: British Army

text: The British Army was heavily involved in the Napoleonic Wars, participating in a number of campaigns in Europe (including continuous deployment in the Peninsular War), the Caribbean, North Africa and North America. The war between the British and the First French Empire of Napoleon Bonaparte stretched around the world; at its peak in 1813, the regular army contained over 250,000 men. A coalition of Anglo-Dutch and Prussian armies under the Duke of Wellington and Field Marshal von Blücher finally defeated Napoleon at Waterloo in 1815.


title: British Army

text: The English were involved politically and militarily in Ireland since receiving the Lordship of Ireland from the pope in 1171. The campaign of English republican Protector Oliver Cromwell involved uncompromising treatment of the Irish towns (most notably Drogheda and Wexford) which supported the Royalists during the English Civil War. The English Army (and the subsequent British Army) remained in Ireland primarily to suppress Irish revolts or disorder. In addition to its conflict with Irish nationalists, it was faced with the prospect of battling Anglo-Irish and Ulster Scots in Ireland who were angered by unfavourable taxation of Irish produce imported into Britain. With other Irish groups, they raised a volunteer army and threatened to emulate the American colonists if their conditions were not met. Learning from their experience in America, the British government sought a political solution. The British Army fought Irish rebels—Protestant and Catholic—primarily in Ulster and Leinster (Wolfe Tone's United Irishmen) in the 1798 rebellion.


title: British Army

text: In addition to battling the armies of other European empires (and its former colonies, the United States, in the American War of 1812), the British Army fought the Chinese in the First and Second Opium Wars and the Boxer Rebellion, Māori tribes in the first of the New Zealand Wars, Nawab Shiraj-ud-Daula's forces and British East India Company mutineers in the Sepoy Rebellion of 1857, the Boers in the first and second Boer Wars, Irish Fenians in Canada during the Fenian raids and Irish separatists in the Anglo-Irish War. The increasing demands of imperial expansion and the inadequacy and inefficiency of the underfunded British Army, Militia, Yeomanry and Volunteer Force after the Napoleonic Wars led to series of reforms following the failures of the Crimean War.


title: British Army

text: Inspired by the successes of the Prussian Army (which relied on short-term conscription of all eligible young men to maintain a large reserve of recently discharged soldiers, ready to be recalled on the outbreak of war to immediately bring the small peacetime regular army up to strength), the "Regular Reserve" of the British Army was originally created in 1859 by Secretary of State for War Sidney Herbert, and re-organised under the "Reserve Force Act, 1867". Prior to this, a soldier was generally enlisted into the British Army for a 21-year engagement, following which (should he survive so long) he was discharged as a Pensioner. Pensioners were sometimes still employed on garrison duties, as were younger soldiers no longer deemed fit for expeditionary service who were generally organised in invalid units or returned to the regimental depot for home service. The cost of paying pensioners, and the obligation the government was under to continue to employ invalids as well as soldiers deemed by their commanding officers as detriments to their units were motivations to change this system. The long period of engagement also discouraged many potential recruits. The long service enlistments were consequently replaced with short service enlistments, with undesirable soldiers not permitted to re-engage on the completion of their first engagement. The size of the army also fluctuated greatly, increasing in war time, and drastically shrinking with peace. Battalions posted on garrison duty overseas were allowed an increase on their normal peacetime establishment, which resulted in their having surplus men on their return to a "Home" station. Consequently, soldiers engaging on short term enlistments were enabled to serve several years with the colours and the remainder in the Regular Reserve, remaining liable for recall to the colours if required. Among the other benefits, this thereby enabled the British Army to have a ready pool of recently trained men to draw upon in an emergency. The name of the Regular Reserve (which for a time was divided into a "First Class" and a "Second Class") has resulted in confusion with the "Reserve Forces", which were the pre-existing part-time, local-service home-defence forces that were auxiliary to the British Army (or "Regular Force"), but not originally part of it: the Yeomanry, Militia (or "Constitutional Force") and Volunteer Force. These were consequently also referred to as "Auxiliary Forces" or "Local Forces".


title: British Army

text: The late-19th-century Cardwell and Childers Reforms gave the army its modern shape and redefined its regimental system. The 1907 Haldane Reforms created the Territorial Force as the army's volunteer reserve component, merging and reorganising the Volunteer Force, Militia and Yeomanry.


title: British Army

text: Great Britain was challenged by other powers, primarily the German Empire and Nazi Germany, during the 20th century. A century earlier it vied with Napoleonic France for global pre-eminence, and Hanoverian Britain's natural allies were the kingdoms and principalities of northern Germany. By the middle of the 19th century, Britain and France were allies in preventing Russia's appropriation of the Ottoman Empire, although the fear of French invasion led shortly afterwards to the creation of the Volunteer Force. By the first decade of the 20th century, the United Kingdom was allied with France (by the Entente Cordiale) and Russia (which had a secret agreement with France for mutual support in a war against the Prussian-led German Empire and the Austro-Hungarian Empire).


title: British Army

text: When the First World War broke out in August 1914 the British Army sent the British Expeditionary Force (BEF), consisting mainly of regular army troops, to France and Belgium. The fighting bogged down into static trench warfare for the remainder of the war. In 1915 the army created the Mediterranean Expeditionary Force to invade the Ottoman Empire via Gallipoli, an unsuccessful attempt to capture Constantinople and secure a sea route to Russia.