John Haldon 
Warfare, State And Society In The Byzantine World 560-1204 [PDF ebook] 

Warfare, State and Society in the Byznatine World is the first comprehensive study of the warfare and the Byzantine World from the sixth to the twelfth century.The book examines Byzantine attitudes to warfare, the effects of war on society and culture, and the relations between the soldiers, their leaders and society. The communications, logistics, resources and manpower capabilities of the Byzantine Empire are explored to set warfare in its geographical as well as historical context. In addition to the strategic and tactical evolution of the army, this book analyses the army in campaign and in battle, and its attitudes to violence in the context of the Byzantine Orthodox Church.