The Type 1 47 mm anti-tank gun was accepted into service in 1942. The design originated as an improvement to the prototype “Experimental Type 97 (1937) 47 mm anti-tank gun. After the Nomonhan Incident, the Imperial Japanese Army started the development of a new anti-tank gun, considering that the Type 94 37 mm anti-tank gun would likely be ineffective against the new Soviet tanks. The design was the first completely indigenous anti-tank gun design completed in Japan, and production was assigned to the army’s Osaka Arsenal. In terms of performance, the design was still somewhat inferior to advanced contemporary designs in western nations, but was considered suitable by the Imperial Japanese Army General Staff. and by the belief that Japan would face only light tanks fielded by the Allied nations in case of a more general war. The Type 1 47 mm AT Gun was introduced in 1942, and approximately 2,300 were produced.