ZSU-37 was a Soviet-made light self-propelled anti-aircraft gun (SPAAG) developed by the end of 1943 and produced at Works No. 40 in Mytishchi. It was the first Soviet series-produced tracked SPAAG. ZSU stands for Zenitnaya Samokhodnaya Ustanovka (Russian: Зенитная Самоходная Установка) meaning anti-aircraft self-propelled mount.
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