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 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 Antiaircraft artillery : service of the piece 3-inch antiaircraft gun - USA Coast Artillery Field Manual, FM 4-125 Index to army regulations : including all regulations and changes promulgated prior to january 1, 1943 / prepared under the direction of the adjutant general … Index to army regulations : including all regulations and changes promulgated prior to january 1, 1944 / prepared under the direction of the adjutant general … Field Artillery : Tactical Employment - USA Field Manual, FM 6-20 Finance department : general provisions - United States War Department, Army Regulations 35-5 Thompson submachine gun caliber .45, M1928A1 - USA Basic Field Manual, FM 23-40