Forty-two fine drawings by Leonard Bridgman depicting almost all of the aircraft employed by the RFC & RAF 1914-18, including the Maurice Farman Longhorn, BE2, RE8, Sopwith Pup, Camel, Dolphin &c., Nieuport Scout, Bristol Fighters, SE5, Spad, DH2, each drawing accompanied by detailed notes on the characteristics, capabilities, technical qualities and operational use of the machine depicted, including Oliver Stewart's personal observations as a decorated RFC ace pilot and commander of the Aeroplane and Armament Experimental Establishment and later an aviation journalist.