From the preaching of the First Crusade by Pope Urban II in 1095 to the loss of the last crusader outpost in the Levant in 1302-03, and from the taking of Jerusalem from the Fatimids in 1099 to the fall of Acre to the Mamluks in 1291, Crusaders tells a tale soaked in Islamic, Christian and Jewish blood, peopled by extraordinary characters, and characterised by both low ambition and high principle.