The Type 10 was a Japanese 120 mm calibre dual-purpose anti-aircraft and coastal defense gun used during the Second World War. The Type 10 number was designated for the year the gun was accepted,the 10th year of Emperor Taishō's reign, 1927 in the Gregorian calendar.
The weapon was originally designed for ship use and was produced in large numbers during 1944. The gun was adapted for land use as a dual-purpose gun.
The gun fired either high explosive or incendiary shrapnel shells that weighed 20.6 kilograms, with a complete round weighing 32.4 kilograms.