Starting with founder Hugues de Payens in 1118–1119, the order's highest office was that of Grand Master, a position which was held for life, though considering the martial nature of the order, this could mean a very short tenure. All but two of the Grand Masters died in office, and several died during military campaigns. For example, during the Siege of Ascalon in 1153, Grand Master Bernard de Tremelay led a group of 40 Templars through a breach in the city walls. When the rest of the Crusader army did not follow, the Templars, including their Grand Master, were surrounded and beheaded. Grand Master Gérard de Ridefort was beheaded by Saladin in 1189 at the Siege of Acre.