Much of the army of the Kingdom of Jerusalem was destroyed by Saladin in this battle on July 4, 1187.
Acre
Arsuf
Hattin
Ain Jalut
Battle of Hattin. This decisive Ayyubid victory opened the way to the city of Jerusalem. Saladin’s capture of Jerusalem sparked the Third Crusade, which was answered by Richard the Lionheart, Philip II of France, and Frederick I Barbarossa.