From the civil wars of the Late Republic to Constantine's reunification of the Empire, corps of guardsmen were at the heart of every Roman army. This title details the nature of these units, their organization and operational successes and failures from their origins in the late Republic through to their struggle against Constantine the Great.
Ross Cowan went to the University of Glasgow with the intention of studying Medieval history but was waylaid by Classics, and eventually emerged with a Ph.D. for research on the Praetorian Guard and Second Parthian Legion. Now a freelance writer and historian, Dr Cowan has published five books and numerous articles on all aspects of warfare in the Roman World. Sean O'Brogain lives and works in Donegal, Ireland. He has a BA (Hons) in scientific and natural history illustration from Blackpool and Fylde College (Lancaster University).