Comparing: ISU-152 vs. Object 704 vs. Object 268

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.

Developed in 1945 on the basis of the IS-2 and IS-3 vehicles, under the supervision of Joseph Kotin. One of the distinctive features was the slope angle of armor plates. Passed trials successfully, but never entered service.

Development of the Object 268 was started in the summer of 1952 at the Kirov Plant, Leningrad, under the supervision of Joseph Kotin. The vehicle was developed on the basis of the T-10 heavy tank. A prototype was manufactured in 1956. The vehicle passed trials, but never saw mass production.