IBG72038 IBG Models 1/72  Type-89 Japanese Medium tank KOU-gasoline Mid-production Tanks serial production began in 1931. It entered service in Japanese Imperial Army one year later, in 1932, and soon became the main tank of it. It required a crew of 4. Its armament consisted of Type 90 57mm gun and 2 Type 91 6,5mm machine guns. Final production version of Type 89 tank - „OTSU" was the first mass produced tank with a diesel engine in the world. Type 89 tanks of different versions saw action in the Second Sino-Japanese War, in the Khalkhin Gol battle against Soviet Union and in Second World War. It proved to be a very effective against Chinese forces but was already obsolete by the time of Khalkhin Gol and battles against Allies in the Pacific theater of WWII.