Comparing: Object 263 vs. Jagdtiger

The development of a heavy tank destroyer on the basis of the IS-7 heavy tank was started in 1950. Three design projects were developed, one of which resulted in a full-size wooden prototype. However, further development was discontinued due to phasing out the IS-7 mass-production.

Developed from 1942 through 1944, the heavy tank destroyer, with the chassis of the Tiger II heavy tank, became the heaviest mass-produced armored vehicle ever. According to various sources, 70–79 tank destroyers were manufactured from 1944 through 1945. The vehicles saw service in the 653rd and 512th Heavy Panzerjäger Battalions.