This item is written in English.
Only 500 pieces are to be manufactured.
--The Red Army, founded by the Soviet Union government (Soviet Union), which was born after the Russian Revolution, realized from the lessons of World War I that large caliber heavy artillery of 152 mm to 280 mm plays an important role on the battlefield.
--Therefore, in developing these heavy artillery in the Soviet Union, which has not even had a heavy industry base in the 1920s, the developers shared the equipment called standardization of the battery, and this approach was the preparation time for howitzer development and mass production in the 1930s. It was possible to shorten the time significantly.
――The B-4B-420 3mm howitzer was developed in this way.
――It was put into actual battles in the Winter War and the German-Soviet war, and was active until the end of the war with its long range and high power created by its large caliber.
――The dolly is a track type, which was selected as a measure against soft ground.
――For this howitzer, we thoroughly explain the development and production of the B-4, which has a unique shape, the technology and its structure, and the actual operation report of each type including the derivative type.
--Number of photos: 415 black-and-white photographs, 119 illustrations, 20 color illustrations and 3D drawings, with 1/35 scale drawings
--Number of pages: 224 pages
( This is a machine translation. Please allow for possible misinterpretations in the text. )