The Crusades were a startling and spectacular phenomenon that exerted a powerful influence on European development over a period of many centuries. Much recent writing has been devoted to explaining how the crusades began and what they achieved. This volume is intended as an introductory guide and analysis of how different aspects of crusading studies have developed. Rather than giving an account of events, each chapter offers an interpretative and historiographical study. It is aimed both at postgraduates and at professional academics.