The study of medieval warfare has developed enormously in recent years. The figure of the armoured mounted knight, who was believed to have materialized in Carolingian times, long dominated all discussion of the subject. It is now understood that the knight emerged over a long period of time and that he was never alone on the field of conflict. Infantry, at all times, played a substantial role in conflict, and the notion that they were in some way invented only in the fourteenth century is no longer sustainable. Moreover, modern writers have examined campaigns which for long seemed pointless...