books.google.com - Without the complex military machine that his forbears had built up over the course of the eighth century, it would have been impossible for Charlemagne to revive the Roman empire in the West. Early Carolingian Warfare is the first book-length study of how the Frankish dynasty, beginning with Pippin...http://books.google.com/books/about/Early_Carolingian_warfare.html?id=Is2WQyLMKV4C&utm_source=gb-gplus-shareEarly Carolingian warfare
