These essays, selected from papers presented at the International Symposium on Crusade Studies in February 2006, represent a stimulating cross-section of this vibrant field. Organized under the rubric of "medieval worlds" the studies in this volume demonstrate the broad interdisciplinary spectrum of modern crusade studies, extending far beyond the battlefield into the conflict and occasional cooperation between the diverse cultures and faiths of the Mediterranean. Although the crusades were a product of medieval Europe, they provide a backdrop against which medieval worlds can be observed to...