soldier and his uniform / orepared by the Women's Interests Section, War Department, Bureau of Public Relations Browning machine gun, caliber .50, M2, water cooled, and mounts - USA Voorschrift, Technical Manual, 9-226 37-MM AA gun matériel - USA Voorschrift, Technical Manual, 9-235 radio operator - USA Voorschrift, Technical Manual, 11-454 Gunnery for seacoast artillery - USA Voorschrift, Training Manual, 2160-30 Abbreviated firing tables - USA Voorschrift, Technical Manual, 6-215 Milling machines, shapers, and planers - USA Voorschrift, Technical Manual, 1-421 Aircraft engine operation and test - USA Voorschrift, Technical Manual, 1-408 Service of the piece : Multiple machine gun mounts - USA Voorschrift, Field Manual, 44-57 United States Army in the world war 1917-1919 / Department of the Army, Historical Division training regulations / war department Chemical warfare service / War Department Engineering manual for War Department construction / War Department , Corps of Engineers