152 mm has been a Russian caliber since World War I, when Britain supplied 6 inch Howitzers and Russia purchased 152 mm guns from Schneider (probably derived from the 155 mm Gun Mle 1877/16) for the Imperial Army.
152 mm has been a Russian caliber since World War I, when Britain supplied 6-inch howitzers and Russia purchased 152-mm guns from Schneider, probably derived from the 155-mm Gun Mle 1877/16, for the Imperial Army.