152 mm Soviet ML-20 howitzer gun

152-mm howitzer-gun of the 1937 model (ML-20, index GAU — 52-G-544A) is a Soviet howitzer-gun of the World War II period. This gun was mass-produced from 1937 to 1946, was or still is in service with the armies of many countries of the world, was used in almost all significant wars and armed conflicts of the middle and end of the XX century. This gun was armed with the most powerful Soviet self-propelled artillery installations of the Great Patriotic War - SU-152 and ISU-152. German troops used captured ML-20 howitzers in Normandy against Allied landings.