Ross Cowan was formerly a research student at the University of Glasgow where he was recently awarded a PhD for a thesis on the Roman army entitled 'Aspects of the Severan Field Army AD 193-238'. The major themes of the thesis are the organisation of the Praetorian Guard and Legio II Parthica, their recruitment, numbers and equipment. Ross also completed ... Read morehis first degree at Glasgow. In 1999 he was elected a fellow of the Society of the Antiquaries of Scotland. Adam Hook studied graphic design, and began his work as an illustrator in 1983. He specializes in detailed historical reconstructions, and has illustrated Osprey titles on the Aztecs, the Greeks, the American Civil War and the American Revolution. His work features in exhibitions and publications throughout the world. Show Less