Ron Field is an internationally acknowledged expert on US military history. Awarded a Fulbright Scholarship in 1982, he taught History at Piedmont High School in California from 1982 to 1983, and was then Head of History at the Cotswold School in Bourton-on-the-Water, UK, until his retirement in 2007. In 2005 he was elected a Fellow of the Company of Military Historians, based in Washington, DC, and was awarded its Emerson Writing Award in 2013. He lives in Gloucestershire, UK.

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 subjects as diverse as the Aztecs, the Ancient Greeks, Roman battle tactics, several 19th-century American subjects, the modern Chinese Army, and a number of books in the Fortress series.

His work features in exhibitions and publications throughout the world. He lives in East Sussex, UK.