[2] It replaced the earlier Type 88 75 mm AA Gun in Japanese service.

[4] However, despite its superior range and firepower, the Type 3 gun could not be produced in sufficient quantities to be truly effective, due to costs, lack of raw materials and damage to Japan's industrial infrastructure by Allied air raids.

The firing platform was supported by five legs, each of which (along with the central pedestal) had adjustable screwed foot for leveling.

These guns were deployed to cover military targets around Tokyo, Osaka, Kobe and the Yawata Steel Works in Kitakyushu.

Overseas, they were deployed to guard the oil fields at Palembang in the Netherlands East Indies[6] Units in Tokyo were credited with downing at least ten B-29 bombers.