Before revision: This volume covers emperor Henry II the Holy, who, in alliance with Pagans, fought three wars against Catholic Poland, the momentous pontificate of Gregory VII, an "aggressive Satan", who lead the Holy See to victory over the emperor's throne in the Investiture Controversy (Canossa), the East-West Schism, the First Crusade with the massacre of Jerusalem's inhabitants as well as the Second and Third Crusade.
After revision: This volume covers emperor Henry II the Holy, who, in alliance with Pagans, fought three wars against Catholic Poland, the momentous pontificate of Gregory VII, an "aggressive Satan", who led the Holy See to victory over the emperor's throne in the Investiture Controversy (Canossa), the East-West Schism, the First Crusade with the massacre of Jerusalem's inhabitants as well as the Second and Third Crusade.