Francois Gilbert is an associate researcher at the French National Centre for Scientific Research, studying Roman militaria. Founder of one of the first re-enactment groups in France (Pax Augusta), he was able to study, reconstruct and experiment with their equipment and combat techniques. Giuseppe Rava, a leading military history illustrator, is inspired by the works of the great military artists, such as Detaille, Meissonier, Roechling, Lady Butler, Ottenfeld and Angus McBride.