 Moreaux competed in the Military Rifle event and finished fourth, in the Military revolver event and finished fifth, and in the Duelling Pistol (au commandment), finishing in sixth place.He also competed in the Military revolver (gras) event but finished in 16th place and in the Free Pistol (50m) event, finishing in 19th position.Moreaux entered the 1908 Olympic Games at the age of 46 and competed in the Free Team Rifle competition for France, but narrowly missed bronze, finishing in fourth position.