UNITED STATES ARMY

18th ANTIAIRCRAFT ARTILLERY GROUP FLAGS & GUIDONS 1944 Regulations

Mobile antiaircraft artillery battalions were truck or tractor towed. Those armed with automatic weapons (AW) had four batteries, each with four firing sections, each section with one 40mm AA gun and one trailer-mounted quadruple caliber .50 AA machine gun, both towed by 2.5-ton trucks. Those armed with the 90mm AA gun also had four batteries with four firing sections, each section with one gun plus four single caliber .50 machine guns on AA mounts. The 90mm guns were towed by 4.5 ton tractors. For both battalion types, service elements (supply, transport, etc.) were incorporated in the headquarters battery. The 90mm gun battalion also had a fire control section equipped with gun-laying radar. Self-propelled antiaircraft artillery battalions were armed with 37mm guns and caliber .50 machine guns. The weapons were mounted on armored halftracks in two configurations: either one 37mm plus twin caliber .50 MGs, or quadruple caliber .50 MGs. Each of the battalion's four firing batteries had eight of each type. The 18th AAA Group had one battery of the 413th AAA and one battery of the 320th AAA attached from the 16th AAA Group.

NATIONAL STANDARD, SERVICE, DISTINGUISHING FLAG & HEADQUARTERS BATTERY GUIDON
18th ANTIAIRCRAFT ARTILLERY GROUP
HHB 18th AA ARTILLERY GROUP
110th ANTIAIRCRAFT ARTILLERY BATTALION (GUN) (MOBILE) (90mm GUN)	447th ANTIAIRCRAFT ARTILLERY BATTALION (AW) (MOBILE) (40mm GUN / CAL .50 MG)
457th ANTIAIRCRAFT ARTILLERY BATTALION (AW) (MOBILE) (40mm GUN / CAL .50 MG)
DETACHMENT 413th ANTIAIRCRAFT ARTILLERY BATTALION (GUN) (MOBILE) (90mm GUN)	DETACHMENT 320th BARRAGE BALLOON BATTALION (VLA) (COLORED)
ATTACHED FROM 16th AAA GROUP

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