GunsBerezin B-20Б-20Б-20Caliber20 mmService193119321933193419351936193719381939194019411942194319441945Soviet Union · Eastern Front≈ Jan 1945 – May 1945Aircraft 1193119321933193419351936193719381939194019411942194319441945La-7 (3 B-20)≈ Jan 1945 – May 1945