Scholarly interest and popular interest in the military orders show no sign of abating. Their history stretches from the early twelfth century to the present. They were among the richest and most powerful religious corporations in pre-Reformation Europe, and they founded their own states on Rhodes and Malta and also on the Baltic coast. Historians of the Church, of art and architecture, of agriculture and banking, of medicine and warfare and of European expansion can all benefit from investigating the orders and their archives. The conferences on their history that have been organized in...