In July of the same year Gérard led the Templars at the Battle Of Háttin. Saladin had captured Tiberias and Guy was contemplating a march on the city to retake it. Raymond advised him to wait for Saladin to come to them, since they were in a well-defended, well-watered position, and would have to cross a dry open plain to reach Tiberias. Gérard opposed this, and convinced Guy to continue the march. He was supported by Reynald de Châtillon, a fellow enemy of Raymond. The armies of Outremer ended up trapped on the dry plain and were defeated on 4 July. Raymond and several other nobles escaped, but some who were not killed, including Humphrey de Toron IV, Aimery de Lusignan, Reynald, Guy "and" "also" Gérard were among those captured by Salah ad-Din. The rest of the Templar prisoners were executed. Gérard remained a prisoner until 1188, during which time his Order was commanded by Brother Thierry (Terricus) from Tyre.