Russia' s Northern Fleet serviceman test firing a 76- mm air- defense gun M1914 discovered near the Novaya Zemlya Archipelago, Murmansk, Russia on March 19, 2018. The 76- mm air- defense gun M1914/15, the first Russian anti- aircraft gun, remained in production until 1934. (Photo by Lev Fedoseyev/TASS/Barcroft Images)
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