The Battle of Azaz was fought on 11 June 1125 between King Baldwin II of Jerusalem's crusader forces and allied Muslim forces led by Aq-Sunqur al-Bursuqi, the Seljuq atabeg of Mosul. One of the bloodiest confrontations before the Second Crusade, the battle resulted in a decisive victory for the Crusaders, causing disturbances of power in the Levant and weakening Seljuk domination in the area. Contemporary chronicler Matthew of Edessa even states that the remnants of al-Bursuqi's army were chased all the way to Aleppo. The battle effectively lifted the siege of Azaz and prevented it from falling to Turkoman hands.