Chemical Laboratory Company - USA Chemical Warfare Service Field Manual, FM 3-25 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 Browning machine gun, caliber .30, HB, M1919A4, ground - USA Basic Field Manual, FM 23-45 Regulations governing the uniforms for commissioned officers and enlisted men of the United States Coast Guard, 1930 Armoured Units in the Field Antiaircraft artillery : service of the piece, 37-mm antiaircraft gun (case 1 firing) / prepared under the direction of the Chief of Coast Artillery - … 30 Browning Machine Gun - Mechanical Training 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
