Vickers-Armstrong QF 3.7 inch Anti-Aircraft Gun Mark II

Similar to Germany's FlaK 88mm and the American 90mm, the OF 3.7" was developed in 1937, and served until 1959 when it was replaced by guided missiles. It fired a 28 pound (12.8 kilogram) 94mm shell to 32,000 feet at 20 rounds per minute. It was crewed by seven men. These guns were made in the United Kingdom until 1943 and then in Canada for the rest of the war. Unlike the Germans, who used their 88mm guns as both anti-aircraft and anti-tank, the QF 3.7" was too heavy to be used in mobile warfare and was damaged by low elevation firings. The last version, Mark VI, was only employed in static positions.