
The Battle of Hattin took place on Saturday, July 4, 1187, between the Crusader Kingdom of Jerusalem and the forces of the Ayyubid dynasty.
The Muslim armies under Saladin captured or killed the vast majority of the Crusader forces, removing their capability to wage war.
As a direct result of the battle, Islamic forces once again became the eminent military power in the Holy Land, re-conquering Jerusalem and several other Crusader-held cities.
These Christian defeats prompted the Third Crusade, which began two years after the Battle of Hattin.
The Second Crusade soon ended with the surrender of Jerusalem.
When news of the Christian defeat reached Pope Urban III, according to legend, he died of shock.
Just two years later, the Third Crusade was launched (1189-1192), but the Europeans under Richard the Lionhearted could not dislodge Saladin from Jerusalem.