Raymond led a mounted the siege of Jerusalem on July 14, 1099, contributing to the capture and rescue of the Holy City. In early July 1099, nine Genovese ships arrived at the port of Jaffa to resupply the Crusaders. Then Raymond IV dispatched Raymond, Guillaume de Sabran, and Raymond I of Turenne, with 50 horsemen to protect them. The latter, having advanced, found Geldemar Carpenel, Lord of Caiphas, struggling with an army of 700 Muslims from Rama who attacked him, inflicting great losses on his infantry. Raymond’s forces allowed the Genoese to disembark, enabling them to take Jerusalem.