Dr Ross Cowan is a British author and historian. He is a specialist in Roman warfare and makes occasional forays into Scottish military history. For more information, and examples of his work, please visit independent.academia.edu/RossCowanSeán Ó'Brógáin lives and works in Donegal, Ireland. He has a BA (Hons) in scientific and natural history illustration from Blackpool and Fylde College (Lancaster University).