Comparing: ISU-152 vs. AT 15

Developed on the basis of the IS tank. The ISU-152 was conceived as a replacement for the SU-152, which was based on the KV-1s chassis. A total of 4,635 vehicles were built from November 1943 through June 1945.

Assault tank conceived to break through fortified positions. The design project was ready by the fall of 1943, but no prototypes were manufactured. However, the project became the basis for the A39 Tortoise heavy assault tank.