Comparing: AC 4 Experimental vs. Type 4 Chi-To

The tank was developed in 1943. An order was placed for 400 vehicles. The prototype was created on the basis of the AC 1 tank with an enlarged superstructure, which allowed mounting a modified turret from the AC 3 tank with a 17-pounder gun. In July 1943, the work on the project was stopped at the final stage, as the program for creating the Australian cruiser tank was discontinued.

The Type 4 Chi-To medium tank was developed in 1943 on the basis of the Chi-Nu. The tank was conceived to replace the Chi-Ha. However, mass production was not launched due to shortages of materials and components. A total of six chassis were produced, and only two tanks were built on their basis.