Origins of the campaign -- Chronology -- Opposing commanders: Crusader leaders, Byzantine leaders, Muslim leaders -- Opposing forces: the Crusaders, the Byzantines, the Armenians, the Turks, the Fatimids -- Opposing plans: the Crusader plans, Byzantine plans, Saljuq plans, Fatimid plans -- The campaign: the ambush; at Dorylaeum, the Crusade divides, the siege of Antioch, the march on Jerusalem, the siege of Jerusalem, the battle of Ascalon -- The aftermath -- The battlefields today.