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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. Both were widely deployed in the United States postwar as the Cold War presented a perceived threat from Soviet bombers.
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 .
Instead, they were assigned to various organizations on an as-needed basis. Batteries were also attached individually to other units, and batteries from other AAA battalions were attached to the 184th as needed. The 184th was divided into four batteries: A, B, C, and D. Each battery had 4 90mm Antiaircraft guns. The unit also included a ...
Their larger 90 mm M2 gun would prove, as did the eighty-eight, to make an excellent anti-tank gun as well, and was widely used late in the war in this role. Also, available to the Americans at the start of the war was the 120 mm M1 gun stratosphere gun, which was the most powerful AA gun with an impressive 60,000 ft (~18 km) altitude ...
Bofors 40 mm gun (World War II) 90 mm M3 gun (World War II – 1950s) 120 mm M1 gun (World War II – 1950s) Skysweeper (early Cold War) M42 Duster (Cold War) M163 VADS "Vulcan" M247 Sergeant York (project) Phalanx CIWS
Also, four 40 mm Bofors gun batteries were placed around the fort. [4] From December 1941 through April 1944 Fort Funston's garrison included elements of the 18th Coast Artillery Regiment. [8] The gun batteries were declared obsolete shortly after World War II, but a 90 mm anti-aircraft gun battery was on the site 1953-57 during the Cold War. [4]
During this time the battalion also added two additional batteries in May 1942, Battery K under the Machine Gun Group and Battery L (20 mm AA Btry). On 22 May 1942 the battalion's anti-aircraft group consisting of H&S, D, E, F, L & K batteries were sent back to Midway Island via USS Kitty Hawk .
The M51 Skysweeper (Gun, M51, Antiaircraft or Gun automatic, 75-mm T83E6, and E7, recoil mechanism, and loader rammer) was an anti-aircraft gun deployed in the early 1950s by both the U.S. Army and U.S. Air Force. It was the first such gun to combine a gun laying radar, analog computer (director) and an autoloader on a single carriage.