This is a curate’s egg book, good in parts but distinctly not in others.
Why would a hardened band of foreign jihādi warriors agree to work for a self-proclaimed leader of the Christian world – especially one militantly opposed to Islam, who kept his own Muslim citizens under close surveillance? And why would such a ruler choose to keep that particular type of professional killer in his personal employ?
Despite their presence in the popular imagination and their undoubted importance in the narrative of medieval history, the Crusades have for a long time sat apart from mainstream medieval historiography. Traditionally, the Crusades themselves are as peripheral in the minds of historians of Europe as they were geographically.