Military Wiki
Type 94 90 mm mortar
Japanese Type 94 90 mm infantry mortar.gif
Japanese Type 94 90 mm mortar
Place of origin  Japan
Service history
Used by War flag of the Imperial Japanese Army.svg Imperial Japanese Army
Wars World War II
Weight 159 kg (350.5 lb)
Barrel length 1.27 m (4 ft 2 in)

Caliber 90 mm (3.5 in)
Action Manual
Elevation +45 to +80 degrees
Muzzle velocity 227 m/s (745 ft/s)
Effective range 3,800 m (4,200 yd)

The Type 94 90 mm mortar was a 90 mm smoothbore infantry mortar, introduced in 1935, used by the Japanese in World War II. The Type 94 designation was given to this gun as it was accepted in the year 2594 of the Japanese calendar (1934).[1]


By giving the Type 94 an especially heavy and stable mount and bipod, a massive shock absorber group, a powerful projectile, and a lengthy tube and heavy powder charge capacity for long range, Japanese designers intended the weapon to serve as a substitute field or artillery piece that could be hauled in pieces to remote locations, a useful attribute for an army short on transport as well as modern towed large-caliber field howitzers and artillery. The Type 94 had a range of some 4000 yards.[2]

Combat record[]

The Type 94 was encountered throughout the war in China. In the Pacific campaign, it was first used against U.S. forces in the Philippines, and later at the Battle of Guadalcanal. Because of its weight, it was normally employed in static siege or defense situations. Japanese forces sometimes went to great lengths to transport these heavy mortars to remote jungle locations when preparing defensive works.



  1. War Department Special Series No 25 Japanese Field Artillery October 1944
  2. George, John B. (Lt. Col), Shots Fired In Anger, NRA Press (1981), pp. 368-371


This page uses Creative Commons Licensed content from Wikipedia (view authors).