"This book, the first full-length treatment of the Barons' Crusade, examines the call for holy war and its consequences in Hungary, France, England, Constantinople, and the Holy Land. By emphasizing comparative local history, The Barons' Crusade: A Call to Arms and Its Consequences brings into question the idea that crusading embodies the religious unity of medieval society and demonstrates how thoroughly crusading had been affected by the new strategic and political demands of the papacy."--Jacket.