Saladin

Salah ad-Din Yusuf ibn Ayyub (c. 1137 – 4 March 1193), commonly known as Saladin, was the founder of the Ayyubid dynasty and the first sultan of both Egypt and Syria. A Sunni Muslim ruler of Kurdish origin, Saladin was an important figure of the Third Crusade and spearheaded the Muslim military effort against the Crusader states in the Levant. At the height of his power, the Ayyubid realm spanned Egypt, Syria, Upper Mesopotamia, the Hejaz, Yemen, and Nubia.

Saladin was sent to Fatimid Egypt in 1164, alongside his uncle Shirkuh, a Kurdish mercenary commander in service of the Zengid dynasty, on the orders of Nur al-Din Zengi. With their original purpose being to help restore Shawar as the vizier to the teenage Fatimid caliph al-Adid, a power struggle ensued between Shirkuh and Shawar after the latter was reinstated. Saladin, meanwhile, climbed the ranks of the Fatimid government by virtue of his military successes against Crusader assaults and his personal closeness to al-Adid. After Shawar was assassinated and Shirkuh died in 1169, al-Adid appointed Saladin as vizier. During his tenure, Saladin, a Sunni Muslim, began to undermine the Fatimid establishment; following al-Adid's death in 1171, he abolished the Cairo-based Fatimid Caliphate which was an Isma'ili (a branch within Shi'a Islam) dynasty, and realigned Egypt with the Baghdad-based Sunni Abbasid Caliphate.

In the following years, Saladin led forays against the Crusader states in Palestine, commissioned the successful conquest of Yemen, and staved off pro-Fatimid rebellions in Egypt. Not long after Nur ad-Din died in 1174, Saladin launched his conquest of Syria, peacefully entering Damascus at the request of its governor. By mid-1175, Saladin had conquered Hama and Homs, inviting the animosity of other Zengid lords, who were the official rulers of Syria's principalities; he subsequently defeated the Zengids at the Battle of the Horns of Hama in 1175 and was thereafter proclaimed the Sultan of Egypt and Syria by the Abbasid caliph al-Mustadi. Saladin launched further conquests in northern Syria and Upper Mesopotamia, escaping two attempts on his life by the Order of Assassins before returning to Egypt in 1177 to address local issues there. By 1182, Saladin had completed the conquest of Syria after capturing Aleppo but failed to take over the Zengid stronghold of Mosul.