The Type 92 10 cm cannon was developed from 1923–1924, as a long range alternative to the Imperial Japanese Army's existing 75 mm field artillery. Production was delayed due to technical issues, notably a desire by the army to reduce the weight of the weapon to a minimal level, and additional requirements issued by the army in 1927 to increase the range of the yet-to-be-completed weapon to. A suitable prototype was finally completed in 1932, and, after extensive testing, went into production and combat service in 1934. A total of 180 units were produced. This piece appears to have almost completely replaced the Type 14 10 cm cannon. It has all the standard features of the 1930–1936 period of Japanese gun design. In traveling position the tube is retracted by means of a winch and locked to the cradle. The most remarkable fact about the Type 92, aside from its appearance, is the great range that it attains with a 35-pound shell in proportion to its unusually low weight. It has been reported that the weapon is rarely fired at extreme ranges, which require the use of a supercharge, because of malfunctions in the recoil system caused thereby. Some years ago troubles with the recoil system were so frequent that extra glands and packing for the recoil cylinders were carried in the firing battery, and replacing them was equivalent to first-echelon maintenance in U.S. practice. Difficulties were also reported when the weapon was fired at or near the limits of traverse. Whether this was due to a unique "bug" in the design of the Type 92 or was inherent in the use of spade-plate stabilization is not known. The Type 92 is stabilized by three spade plates for each trail. Both spade plates and trail blocks are demountable.
Design
Readily recognized by its long slender gun barrel and split carriage trail, the Type 92 10 cm cannon was designed particularly for long-range fire. The recoil system was hydro-pneumatic and it had a distinctive three-step interrupted thread breechblock. It fired a shell up to with standard high-explosive shells, and also had provisions for special long-range shells that could reach, as well as chemical, armor-piercing, smoke and incendiary shells. The gun barrel was extremely long, making field transport very cumbersome. The gun was normally tractor-drawn using its large wooden wheels with solid rubber tires, but could also be pulled by a five-ton truck. Its greatest drawback was that it had spade plates on each trail leg that had to be pounded into the ground to anchor the gun in place.
A surviving gun is displayed in front of the Veterans Hall in Arcata, California. It has the serial number 136, and was made at the Osaka Infantry Armory. Another surviving gun is located in front of the Rome-Floyd Parks and Recreations center in Rome, GA. It has the serial number 33, and was made in Osaka, Japan. This gun, which is known as "Pistol Pete", was captured December 1942 at Guadalcanal. A third gun is located at The Istana, Singapore. It was presented to the leader of the returning victorious British forces to Singapore, Lord Louis Mountbatten, following the official Japanese surrender to the British in 1945 at the end of WWII.
