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 Browning machine gun, caliber .30, HB M1919A4, ground - USA Basic Field Manual, FM 23-45 75-mm gun matériel, M1897 and modifications - USA Technical Manual, TM 9-305 Browning machine gun, caliber .30, HB, M1919A4, ground - USA Basic Field Manual, FM 23-45 Antiaircraft artillery : service of the piece, 37-mm antiaircraft gun (case 1 firing) / prepared under the direction of the Chief of Coast Artillery - … Antiaircraft artillery : service of the piece 40-mm antiaircraft gun - USA Coast Artillery Field Manual, FM 4-141
