Combat record of this gun:
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. Design:
The Type 94 37 mm AT gun was based on a German (Rheinmetal-Borsig) quick fire design, the 3.7 cm PaK 37, some examples of which had previously been received by the Army Technical Bureau for testing. As with many Japanese designs, it had a very low profile and was intended to be operated from a squat or prone position. The gun had a gun shield to protect the gunner and open carriage-style legs which could be spread to improve the stability. The breech had a semi-automatic exhaust system to improve reloading time. When the shell was loaded, the rear of the cartridge case tripped a catch closing the breechblock. The recoil action of firing opened the breech and extracted the cartridge case.
The carriage was equipped with either wooden spoke or perforated steel wheels, and the whole assembly could be broken down into four pack loads each weighing less than 100 kilograms to permit transport in four horse loads. Sighting was by a straight telescopic sight. The gun could fire either high explosive or armor piercing rounds. History and Development:
The Type 94 37 mm anti-tank gun (Kyuyon-shiki sanjyunana-miri sokushaho) 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 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.
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