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 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 Interior Guard duty: volume VI / prepared under direction of the Chief of Infantry - United States War Department, Basic Field Manuel, FM 26-5 Song and service book for ship and field. Army and Navy / ed. by Ivan L. Bennett, chairman of the editorial committee Uniforms of the United States navy 1900 - 1967 field manual Combat in fortified areas and towns. - USA Voorschrift, Field Manual, 31-50