In the firing position of the Soviet 203 mm howitzer M1931 from the Red Army Artillery during Great Patriotic War (1941 – 1945). The Eastern Front of the Second World War in Europe.
B-4 is the Soviet howitzer large capacity caliber 203 mm (8 inches). Full official name of the gun is 203 mm howitzer M1931. During the Soviet-Finnish war howitzer B-4 was used to destroy bunkers of the Mannerheim Line. It is a tool to actively and successfully used in World War II, especially in the assault fortified German defense lines.
Weight explosive projectile howitzer B-4 is 100 kg, range of shooting – 18 km. Total production howitzer B-4 was 871 units.