William Horsted studied Ancient History at the University of Bristol. After a year studying agriculture at the Royal Agricultural College, he returned to Bristol to undertake postgraduate research into the adoption of Christianity in rural areas of Late Roman North Africa. As well as ancient Mediterranean warfare, his research interests include the agriculture and ecology of the same period. This is his first book. 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.