The Crusades were military campaigns sanctioned by the Latin Roman Catholic Church In 1095, Pope Urban II proclaimed the First Crusade with the stated goal of restoring Christian access to holy places in and near Jerusalem. Following the First Crusade there was an intermittent 200-year struggle for control of the Holy Land, with six more major crusades and numerous minor ones. The crusaders often pillaged the countries through which they travelled in the typical medieval manner of supplying an army on the move. Nobles often retained much of the territory gained rather than returning it to the Byzantines as they had sworn to do. The Fourth Crusade resulted in the sack of Constantinople by the Roman Catholics, effectively ending the chance of reuniting the Christian church by reconciling the East/West Schism.