Seacoast artillery : service of the piece 12- and 14-inch guns : (dissapearing carriage) - USA Coast Artillery Field Manual, FM 4-80 Seacoast artillery : service of the piece 16-inch gun and howitzer - USA Coast Artillery Field Manual, FM 4-85 Reference data : (seacoast artillery and antiaircraft artillery) - USA Coast Artillery Field Manual, FM 4-155 Elementry map and aerial photography reading - USA Voorschrift, Field Manual Advanced map and aerial photograph reading - USA Voorschrift, Field Manual, 21-26 field manual Corps of engineers : construction and routes of communication Photomail operation - USA War Department Field Manual, FM 11-150 Advanced map and aerial photograph reading - USA Basic Field Manual, FM 21-26 field manual Browning machine gun caliber .30, HB, M1919A4 (mounted in combat vehicles) / prep. under dir. of the Chief of Infantry field manual Browning machine gun, caliber .30, M1917 Engineer soldier's handbook / Prepared under direction of the chief of engineers - United States War Department, Basic Field Manuel, FM 21-105 Examination for gunners - USA Antiaircraft Artillery Field Manual, FM 4-119