Fatimid military organisation

The Fatimid military combined land forces with fleets supported by tax revenue, administrative offices and workshops. Between 909 and 1171, it helped transform a North African religious movement into a caliphate centred on Egypt. Kutama Berber supporters supplied the early army’s core. After the conquest of Egypt in 969, new contingents and eastern campaigns changed both recruitment and the balance of power at court.

Army and navy performed connected tasks. A field force could defeat an opponent or besiege a town, while ships moved reinforcements and kept a coastal position supplied. Both needed trained personnel, equipment, provisions and secure income. Control over those resources could give a commander enough power to challenge the ruler whom he served.

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The army: recruitment, command and fighting

The Kutama came from what is now northeastern Algeria and helped overthrow the Aghlabid rulers of Ifriqiya, the region centred on present-day Tunisia, in 909. Their support rested on allegiance to the Ismaili movement and its leaders. The Fatimids also absorbed men from defeated governments, turning a successful movement into a force capable of garrisoning territory and pursuing new conquests.

Egypt brought access to different sources of manpower. Troops inherited from the Ikhshidid government joined the Kutama who had accompanied the dynasty east. After defeating Alptakin in 978, the Fatimids recruited Turkish and Daylamite soldiers from his forces; the latter came from northern Iran. Turkish cavalry contributed heavily armoured horsemen, while Black African infantry and Armenian archers became important in subsequent decades. Recruitment included enslaved men, freedmen, mercenaries and tribal allies. These categories involved different relationships to service and to the commanders who organised it.

Government administration provided a framework for these forces. A military diwan, or bureau, supervised army affairs and recruitment. Contingents were divided into smaller units, and commanders had ranks marked by insignia such as gold collars and silver batons. Musters assembled soldiers for inspection before campaigning. The twelfth-century Hujariyya, developed from a palace school for sons of military and civil elites, trained an elite cavalry corps for caliphal service.

Infantry, soldiers fighting on foot, formed the main body of many eleventh-century field armies. Cavalry often occupied the flanks, where mounted movement could support the central force. Early Kutama troops carried swords, bows and javelins, light throwing spears. Heavily armoured cavalry became more prominent after contact with eastern opponents; linked metal rings could protect both rider and horse. Siege engines hurled missiles at defended positions, while siege towers brought attackers toward the height of walls.

The army also held garrisons and supplied fighters for shipboard service. Its work extended from maintaining a position to moving across the desert between Egypt and Palestine. Horses, camels, arms and provisions were consequently part of military maintenance. Paying a soldier was only one component of preparing a force for a campaign.

The navy: ships, crews and coastal supply

The North African fleet operated around Sicily and southern Italy from bases including Mahdiya, Tripoli and Palermo. At Mahdiya, a protected harbour and arsenal brought anchorage together with shipbuilding and repair. Timber supply constrained this work. Wood imported from Sicily and elsewhere allowed vessels to be constructed or replaced, so naval strength depended on commercial and political access to material as well as on the availability of crews.

After 969, Egypt’s Nile system became the navy’s principal base. Arsenals at Fustat and near Cairo built and maintained vessels inland, with access to the Mediterranean through the Delta. Alexandria and Damietta supplied further facilities. Ships could carry soldiers and provisions toward the Levantine coast, keeping towns connected with Egypt when overland routes were exposed to attack.

Galleys used banks of oars as well as sails. Rowing gave a commander controlled movement in action or in an unfavourable wind, but required many men and substantial water supplies. Sailing conserved their effort when winds were suitable. Transports carried troops, food and heavy equipment, performing a different task from a manoeuvrable warship. Sailors handled the vessels, oarsmen propelled them, craftsmen maintained equipment and marines fought during boarding or landings.

Combat used arrows, javelins, burning weapons and boarding. The fleet also had to reach a port at the right time. Water carried in ceramic jars occupied space and needed regular replenishment, while rough weather limited the sailing season. These requirements favoured movement along coasts with opportunities to land and refill supplies.

Cooperation with an army could decide an operation. In the 940s, an attempt to retake Susa in North Africa with troops delivered by a small squadron failed; a later combined attack by land and sea succeeded. In the Crusader era, delayed relief could be equally decisive. A fleet sent toward Tripoli in 1109 encountered adverse winds and a strong Genoese force and arrived after the city had fallen. Naval resources had value only when ships, crews and supplies could reach the threatened position in time.

Paying for service and controlling resources

The Fatimids maintained troops through treasury payments and assignments of agricultural revenue. In the early years of al-Hakim’s reign, soldiers received salaries eight times a year; under al-Mustansir, payments became monthly. An iqta was a claim on income from land in return for service. It did not itself give the recipient ownership of the fields or of their cultivators.

Such assignments allowed agricultural production to support military maintenance. In the later Fatimid system, a recipient could receive a defined stipend while the state retained a claim on the remaining revenue. Commanders also used estates to support their own followers. Whoever arranged income and promotion could develop close loyalties within a contingent, creating a political relationship alongside the formal chain of command.

When revenue or payments failed, that relationship could become dangerous to the government. Unpaid soldiers rioted, fought rivals or took resources by force. During the 1060s and early 1070s, competition between contingents combined with famine and administrative breakdown. Commanders controlling parts of the Delta obstructed supplies, while soldiers plundered the capital. Military disorder damaged the economy that was supposed to pay for the army.

Commanders and the changing state

Badr al-Jamali arrived in Egypt in January 1074 with his own military following and restored a stronger government. His position as vizier, or chief minister, concentrated authority over armies, administration and revenue. The caliph remained the dynasty’s religious and ceremonial head, while military viziers exercised much of the practical power. Badr’s reforms altered recruitment and removed forces he regarded as unreliable.

External pressures narrowed the military’s room to act. Seljuk advances reduced Fatimid control of inland Syria, and Crusader conquests gradually removed coastal bases. Ascalon fell in 1153. A navy sailing from Egypt had farther to travel as its available ports diminished, and ships lost in action or storms required costly replacement.

In 1168, the destruction of Fustat’s principal arsenal damaged naval construction and maintenance. In 1169, Fatimid Black African and Armenian troops opposing Saladin were defeated. He consolidated his position as vizier and abolished the Fatimid caliphate in 1171. The military following on which he relied replaced the forces and political relationships that had sustained the dynasty’s last decades.