Type 94 37 mm Anti-Tank Gun

The Type 94 37 mm anti-tank gun was an anti-tank gun developed by the Imperial Japanese Army, and used in combat during the Second Sino-Japanese War and World War II. The Type 94 number was designated for the year the gun was accepted, 2594 in the Japanese imperial year calendar, or 1934 in the Gregorian calendar.

Country Name Origin Year
Japan 1936
Country Name Operational Year Retirement Year
Japan 1939 1945 View

The Type 94 37-mm AT gun was introduced in 1936. The design originated as an improvement to the Type 11 37 mm Infantry Gun, which was also used as a primitive anti-tank weapon. However, its short bore, low muzzle velocity, short range and slow reloading time gave it only a limited capacity against enemy armor. Development of a replacement began in July 1933 and was completed a year later. Initial testing indicated that a trained crew could fire up to 30 rounds per minute; however, Army planners felt that the initial design was too heavy. A modified design was tested in 1935, and actual production began in 1936; however, the weapon retained its original “Type 94” (imperial year 2594 = western year 1934) designation. Approximately 3,400 units were produced.

One of these few remaining units is on display at the Missouri Yacht Club, Lake Lotawana, MO.

The Type 94 37mm AT guns were typically assigned in groups of four to combat infantry regiments. Each weapon was manned by a squad of 11 personnel, and was kept in contact with the regimental headquarters (typically up to 300 meters) away by field telephone or messenger runners. The Army claimed a penetration capability of 20 mm of armor at a distance of 1000 meters, and penetration of up to 40 mm at shorter distances. However, it appears unlikely that this performance was achieved in actual combat, as the Army Technical Bureau continued to experiment with ways to increase muzzle velocity through 1941.

The Type 94 37mm AT gun was effective against Soviet light armor in the Nomonhan Incident of 1939, but was considered obsolete against more advanced Allied tanks, such as the M4 Sherman by the start of the Pacific War. However, it remained in service on most fronts in World War II for lack of a better replacement.

Type Anti-tank gun
Place of origin  Japan
Service history
In service 1936 - 1945
Used by  Imperial Japanese Army
Wars Second Sino-Japanese War,Soviet-Japanese Border Wars, World War II
Production history
Produced 1936-1941
Number built 3400
Weight 324 kg (714 lb) approx
Length 2.9 m (9 ft 6 in)
Barrel length 1.765 m (5 ft 9 in) L/46.1
Width 1.19 m (3 ft 11 in)
Shell 37×165 mm. R
Caliber 37 mm (1.45 in)
Breech Sliding horizontal breech
Elevation -10° to +25°
Traverse 60°
Rate of fire 30 rpm
Muzzle velocity 700 m/s (2,300 ft/s)
Effective firing range 2,870 m (3,140 yd)
Maximum firing range 4,500 m (4,900 yds)
Sights straight telescopic

End notes