Comparing: T67 vs. AT 2

Development started in the spring of 1942. After trials in the fall of 1942, the decision was made to replace the 57-mm gun with a 75-mm gun. Two prototypes were manufactured. The vehicle saw neither mass production nor service.

Design for an assault tank to break through enemy defensive lines. The design was completed by May 15th, 1943. No prototypes were built, the project helped set the stage for another heavy assault tank, the A39 Tortoise.