Raynald of Châtillon
Saladin, who had united Egypt and Syria under his rule, invaded the Kingdom of Jerusalem in September 1183. Humphrey commanded the forces of Oultrejourdain, dispatched by Raynald of Châtillon to join the united army of the kingdom. Saladin's soldiers ambushed and almost annihilated his troops at Mount Gilboa. Saladin's campaign ended with his withdrawal on 7 October, because he could not persuade the main army to join battle.