Sack of Thebes

The Sack of Thebes took place in 663 BC in the city of Thebes at the hands of the Neo-Assyrian Empire under king Ashurbanipal, then at war with the Kushite Twenty-fifth Dynasty of Egypt under Tantamani, during the Assyrian conquest of Egypt. After a long struggle for the control of the Levant which had started in 705 BC, the Kushites had gradually lost control of Lower Egypt and, by 665 BC, their territory was reduced to Upper Egypt and Nubia. Helped by the unreliable vassals of the Assyrians in the Nile Delta region, Tantamani briefly regained Memphis in 663 BC, killing Necho I of Sais in the process.
On learning of these events, Ashurbanipal aided by Necho's son, Psamtik I and his Carian mercenaries, returned to Egypt with a large army and comprehensively defeated the Kushites near Memphis. The army then proceeded south to Thebes, which quickly fell as Tantamani had already fled to Lower Nubia. The city was thoroughly sacked, its inhabitants were deported and much booty taken back to Assyria, including two large obelisks.
The sack of Thebes was a major event in the history of the city and of ancient Egypt in general. It effectively marks the end of the 25th Dynasty of Egypt as Tantamani lost his main foothold in Egypt. The Kushites were permanently expelled within a decade of the fall of Thebes as none of Tantamani's successors would ever manage to retake territories north of Elephantine. Durably weakened, Thebes peacefully submitted itself less than six years after the sack to a large fleet sent by Psamtik to control Upper Egypt as he freed himself from the Assyrian vassalage. The sack thus permitted the rise of the Twenty-sixth Dynasty, the end of the Third Intermediate Period and the beginning of the Late Period. The sack seems to have reverberated more generally throughout the Ancient Near East, it is notably mentioned in the Book of Nahum as an example of the destruction and horror that can befall a city.
Background.
In the late 8th century BC, Egypt and Nubia were united and ruled by the Kushite pharaohs of the Twenty-fifth Dynasty of Egypt. The Neo-Assyrian Empire was already extending its influence over the Levant at the same period, and in the spring of 720 BC Piye or perhaps Shebitku fought and lost a first battle against the Assyrians near Rafah.
The situation did not change owing to the Assyrian hegemony until c. 705 BC when the death of Sargon II led to revolts against the Assyrians throughout their empire. Shebitku's successor Shabaka seized the occasion and return to the Levantine coast, where he was free to roam until c. 701 BC when Sennacherib was finally able to assemble an army and win over the Egyptians at Eltekeh. Following these events, Shebitku and his successor Taharqa enjoyed a period of peace and managed to increase their influence once more over the Levant and along the Phoenician coast. This situation went unchecked until c. 679 BC, at which point Esarhaddon led a military campaign up to the Brook of Egypt and then in Phoenicia c. 676 BC. The results of these activities was to put the Levant firmly into Assyrian hands. However, by this time Essarhadon had realized that a conquest of Lower Egypt was necessary in order to permanently reduce the Kushite threat on the Levant.
In March of 673 BC, Essarhadon sent a large military force to Egypt, possibly via the Wadi Tumilat but was defeated by the Egyptians under Pemu, then ruler of Heliopolis for the Kushites. Esarhaddon returned two years later in the summer of 671 BC and after a number of battles, was able to take Memphis, wound Taharqa, capture his brother and his son Nes-Anhuret, heir to the throne. Taharqa's remaining son, Atlanersa, was then likely too young to reign and another brother of Taharqa, Tantamani would ultimately ascend the throne. As a consequence, the Kushites were temporarily expelled from Lower Egypt, which passed under the control of Assyrian vassals, in particular Necho I in Sais.
In spite of these successes for the Assyrians, the Egyptian vassals in the Delta region were unruly and Taharqa was attempting to return to Lower Egypt. Esarhaddon launched a novel military expedition c. 669 BC but died that year, allowing Taharqa to retake Memphis and, finally, the Delta region in late 668 BC. In 667 BC, Esarhaddon's heir Ashurbanipal decided to re-establish the Assyrian dominion over Egypt, invading the land in October of that year and going up to Thebes were they defeated Taharqa while simultaneously quelling a rebellion in the Delta. Soon after, Taharqa might have won some victory in Thebes which allowed him to keep control of Upper Egypt. In Lower Egypt, Necho was reinstated vassal king of Sais in spite of his betrayal. The situation did not change until 664 BC with Taharqa's death.
The year 663 BC.
Tantamani's failed reconquest.
Taharqa was succeeded by his brother Tantamani at his death. Tantamani immediately launched a massive military campaign aiming once more at uniting Egypt under the rule of the 25th Dynasty. His army travelled north, stopping at Napata, Elephantine, Thebes and Heliopolis fortifying both in 664 BC. Tantamani arrived in Memphis in April 663 BC and killed Necho I during the ensuing fight near the city. Tantamani then proceeded north and received the capitulation of some but not all Delta kinglets, then expulsed the remaining Assyrian troops from Egypt while Necho's young son Psamtik managed to flee to Assyria via Palestine.
Sack.
The Assyrians soon returned to Egypt. Together with Psamtik I's army, which comprised Carian mercenaries, they fought a pitched battle in north Memphis, close to the temple of Isis, between the Serapeum and Abusir. Tantamani was defeated and fled to Upper Egypt but just 40 days after the battle, Ashurbanipal's army arrived in Thebes. Tantamani had already left the city for Kipkipi, a location that remains uncertain but might be Kom Ombo, some south of Thebes. The city itself was conquered "smashed (as if by) a floodstorm" and heavily plundered. The event is not mentioned in Egyptian sources but is known from the Assyrian annals, which report that the inhabitants were deported. The Assyrians took a large booty of gold, silver, precious stones, clothes, horses, fantastic animals, as well as two obelisks covered in electrum weighting 2.500 talents (c. 75.5 tons, or 166,500 lb):
The sack of Thebes was a momentous event that reverberated throughout the Ancient Near East. It is mentioned in the Book of Nahum chapter 3:8-10
and a prophecy in the Book of Isaiah 20:3-5 refers to the sack as well
Aftermath.
Kushite kingdom of Napata.
Concurrently or soon after the sack, the Kushite army withdrew from Egypt in large numbers, a momentous event that was still remembered some 200 years later and gave rise to Herodotus' story about 240,000 Egyptian deserters settling in Nubia.
Tantamani's fate after the loss of Thebes is not entirely clear: he seems to have ruled for some time as king of Kush, as suggested by a relief of him in Jebel Barkal. Indirect evidence points to a continued Kushite presence in Upper Egypt between 661 BC and 656 BC: monuments show that the Thebans continued to acknowledge the sovereignty of Tantamani until as late as 656 BC, although the actual extent of his power is uncertain. At the same time, the supreme authority in Thebes seems to have been in the hands of Mentuemhat and his wife Shepenupet II.
By 653 BC Tantamani's successor Atlanersa was on the throne and he reigned solely over Nubia, with his seat of power in Napata, starting the so called Napatan period of Nubia. Although Atlanersa and his successors styled themselves as Egyptian pharaohs, none of them posed a serious threat to Egypt. After imposing his authority over Upper Egypt, Psamtik I established a garrison on Elephantine and may have led a military campaign in Nubia. By the time of Psamtik II, c. 590 BC the Egyptians had sacked Napata.
End of the Assyrian presence.
The Assyrians did not hold Thebes for long: already by 662 BC, one year after the sack, some Thebans were dating their documents as per Tantamani's years of reign, suggesting that the Assyrians had already left the region. Around the time of the sack, Ashurbanipal was personally involved in two conflicts in Phoenicia, submitting Arwad and Tyre. Soon after he participated in further campaigns against the Mannai, the Elamites and the Medes, all between 665 BC and 655 BC, which might explain why he did not maintain an Assyrian presence in Thebes.
Late Period of Egypt.
In the decade following the sack, the Assyrian influence in Egypt quickly waned as Psamtik I managed not only to dominate the other kinglets of the Delta region but also freed himself from Assyrian vassalage.
With Thebes' influence and outreach deeply weakened, Psamtik sent a strong military fleet to the city in 656 BC and immediately received its submission. To affirm his control over the city, he had his daughter Nitocris I adopted by Amenirdis II, who was not only the daughter of Taharqa but also the Divine Adoratrice of Amun, then the pinnacle of the powerful priesthood of Amun in the city. Psamtik then only had to secure Egypt's southern border by putting a garrison on Elephantine to submit the whole of Upper Egypt for himself.
In 655 BC, Psamtik turned against his Assyrian overlord aided once more by Ionian and Carian mercenaries and allied with Gyges of Lydia. He expelled the remaining Assyrians from Lower Egypt and pursued them as far as Ashdod. Ashurbanipal then deeply embroiled in war against the Elamites had no army to send to Egypt. In the span of seven years, Psamtik had effectively united and freed Egypt, marking the beginning of the Late Period.