While Karl Leyser was pre-eminent in the English-speaking world as the historian of medieval Germany, his work has increased our understanding of European society as a whole. In particular, he brought to life nobles and ecclesiastics, by combining a profound knowledge of the primary sources with an imaginative ability to understand motives and attitudes. Warriors and Churchmen in the High Middle Ages brings together essays by Karl Leyser's pupils, many of them distinguished historians in their own right, on subjects which he himself illuminated.