field manual Telephone switchboard operating procedure field manual Radio communication field manual Telephone switchboard operating procedure field manual Reference data / prepared under direction of the Surgeon General field manual 37-mm gun, antitank M3 / War Department field manual U.S. rifle, caliber .30 M1917 (Enfield) / War Department field manual Quartermaster operations / prepared under direction of the quartermaster general field manual Supply and field service / prepared under direction of the chief of the chemical warfare service field manual special service company field manual Ordnance service in the field field manual Camouflage / Prepared under direction of the chief of engineers field manual Ordnance ammunition company : ordnance ammunition battalion
