Religious Horror and Holy War in Viking Age Francia

Gillis has written a vital book that takes a moment of crisis in the late ninth century and transforms how we think about not just the Viking attacks but much else. The Franks were enmeshed in violence and Gillis is one of the first to really theorize what that meant, how 'horror' can help us understand not just how they thought about war, politics, and religion, but also how the centuries that followed built upon those foundation stones and further developed an idea of Christian holy war that crescendoed in the twelfth century."" - Matthew Gabriele, Professor of Medieval Studies, Dept. of Religion & Culture, Virginia Tech

""Matthew Gillis is one of the most creative historians working today in any field. His application of the theories and literature of horror to Carolingian texts allows him and his readers to find new insights in the material. It will be particularly valuable for showing how the Carolingians and ideas of horror helped shape the early doctrine of holy war."" - Jay Rubenstein, Professor of History and Director of the Center for the Premodern World, University of Southern California