Raffaele D'Amato, PhD, is the author of some 40 books and has written numerous articles on the Roman Empire, Byzantium, medieval Europe and the military of Ancient Greece. He is currently an archaeological consultant and lawyer for Timeline Auctions Ltd of Harwich, England, and an external researcher for the Laboratory of the Danubian Provinces at the University of Ferrara.Graham Sumner was born in 1958. He studied illustration at Wrexham Art School and has specialised in archaeological reconstruction drawings. He has written a number of articles on the Roman Army for Military Illustrated magazine and was the author of Roman Army: Wars of the Empire in Brasseys' History of Uniform series. He is a member of the Association of Archaeological Illustrators and Surveyors MAAI&S.