After taking Jerusalem, the Khwarazmian forces continued south, and on 17 October fought on the side of the Ayyubids at the Battle of La Forbie, as the Crusaders used to call Harbiyah, a village northeast of Gaza, destroying the remains of the Crusader army there, with some 1,200 knights killed. It was the largest battle involving the Crusaders since the Battle of the Horns of Hattin in 1187.