Numerous popes during this period used Papal finances and armies to enforce and expand upon the longstanding territorial and property claims of the papacy as an institution, e.g. Pope Julius II and the League of Cambrai; Pope Clement VII and the War of the League of Cognac. Before the Western Schism the papacy derived much of its revenue from the "vigorous exercise of its spiritual office;" however, during the Renaissance, popes were largely dependent on financial revenue from the Papal States themselves. In attempting to increase the territory of the Papal States, Pope Julius II became known as "the Warrior Pope" for his ongoing military campaigns. He continued the consolidation of power in the Papal States and continued the process of rebuilding Rome physically. His most prominent architectural project was the rebuilding of St. Peter's Basilica.