Crusader invasions of Egypt

The Crusader invasions of Egypt were the repeated invasions of Fatimid Egypt from 1163 to 1169 by King Amalric of Jerusalem, who wished to strengthen the Crusader Kingdom of Jerusalem's position in the Levant by taking advantage of the weakness of the Fatimids. The invasions began as part of a succession crisis in the caliphate, which began to crumble under the pressure of Muslim Syria ruled by the Zengids and the Christian Crusader states.

Source: Wikipedia — Crusader invasions of Egypt (CC BY-SA 4.0)