Materiel instruction memorandum : The Firing Battery 155mm Gun M1 Thompson submachine gun caliber .45, M1928A1 - USA Basic Field Manual, FM 23-40 Drill regulations for field artillery (4.7 inch gun) Drill regulations for field artillery (4.7 inch gun) Coast artillery corps : Gun drill, mobile mount, antiaircraft artillery - USA Voorschrift, Training Regulations No. 435-250 Browning machine gun, caliber .50, M2, aircraft, fixed and flexible - USA Voorschrift, Technical Manual, 9-225 37-MM AA gun matériel, M1A2 - USA Voorschrift, Technical Manual, 9-235 Service of the piece : Twin 40-mm gun motor carriage M19 - USA Voorschrift, Field Manual, 44-62 37mm Gun, Antitank, M3 - USA Basic Field Manual, FM 23-70 Browning machine gun, caliber .50, HB, M2 ground - USA Basic Field Manual, FM 23-60 Browning machine gun caliber .30, HB, M1919A4 (mounted in combat vehicles) - USA Basic Field Manual, FM 23-50 Browning machine gun, caliber .50 HB, M2 / War Department - USA Field Manual, FM 23-65
