Mark R. Henry is a lifelong student of military history and an experienced re-enactor of many periods. He served in the US Army as a signals officer 1981-90, in Germany, Texas and Korea. He holds a BA degree in History and is studying for his Master's; and currently works in the US Army museum system. His special interest lies in the United States armed forces of the 20th century.

Stephen Walsh studied art at the North East Wales Institute. Since then he has worked mainly for the American historical board-game market, fulfilling a lifelong interest in historical subjects. His American works include the best-selling Settlers of Catan. He has also produced many pieces of artwork inspired by J R R Tolkien. He is married with two children and lives in Macclesfield.
Stephen Walsh studied art at the North East Wales Institute and has worked as a professional illustrator since 1988. Since then he has illustrated a variety of books and games including Settlers of Catan. His projects for Osprey include such diverse subjects as the battle of Otterburn, the Chinese army from 1937 to 1949, and the US Home Front in World War II.