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The 2nd 90mm Antiaircraft Artillery Gun Battalion was a United States Marine Corps antiaircraft unit that was active during the 1940s & 1950s. Originally formed during World War II as the 9th Defense Battalion , the battalion took part in combat operations on Guadalcanal , Rendova , Munda Point , and Guam .
It was capable of firing a 3.5 in × 23.6 in (90 mm × 600 mm) shell 62,474 ft (19,042 m) horizontally, or a maximum altitude of 43,500 ft (13,300 m). The 90 mm gun was the US Army's primary heavy anti-aircraft gun from just prior to the opening of World War II into 1946, complemented by small numbers of the much larger 120 mm M1 gun.
The battalion had left its Coast Defense Group behind and exchanged the aircraft sound locators for SCR-268 radar sets. In March 1942 the battalion was relieved by the Army's 61st Coast Artillery Regiment. [3] After the attack on Pearl Harbor, where defenders shot down three planes on 7 December 1941, the battalions grew rapidly.
The M36 tank destroyer, formally 90 mm Gun Motor Carriage, M36, was an American tank destroyer used during World War II. The M36 combined the hull of the M10 tank destroyer, which used the M4 Sherman's reliable chassis and drivetrain combined with sloped armor, and a new turret mounting the 90 mm gun M3. Conceived in 1943, the M36 first served ...
M3 90 mm Gun: American 90 mm antiaircraft/antitank gun; M5 3-inch gun: American 76.2 mm antitank gun; M7 3-inch gun: American 76.2 mm antitank gun used in the M10 tank destroyer; M8 4.5-inch rocket: American artillery rocket; M1 75 mm pack howitzer: American 75 mm mountain gun; M18 recoilless rifle: Late-war American 57 mm recoilless rifle
752nd Tank Battalion; 754th Tank Battalion; 756th Tank Battalion (United States) 758th Tank Battalion (United States) 759th Tank Battalion (United States) 761st Tank Battalion (United States) 763rd Tank Battalion (United States) 778th Tank Battalion; 784th Tank Battalion (United States) 787th Tank Battalion; 789th Anti-Aircraft Artillery Battalion
The 70th Tank Battalion at Fort Knox Kentucky had pulled World War II memorial M26s off of pedestals and reconditioned them for use, but had to fill out two companies with M4A3s. The 72nd Tank Battalion at Fort Lewis Washington and the 73rd Tank Battalion at Fort Benning Georgia were fully equipped with M26s. The 89th Medium Tank Battalion was ...
The 2d Antiaircraft Artillery Battalion (Composite) (2d AAA Bn [Composite]) was a United States Marine Corps antiaircraft unit that served during World War II. Formed in 1943 as the 3d Airdrome Battalion, its original mission was strictly providing air defense. On 1 October 1943 the battalion was redesignated the 18th Defense Battalion.