IS tank family

The IS tanks were a series of heavy tanks developed as a successor to the KV-series by the Soviet Union during World War II. The IS acronym is the anglicized initialism of Joseph Stalin. The heavy tanks were designed as a response to the capture of a German Tiger I in 1943. They were mainly designed as breakthrough tanks, firing a heavy high-explosive shell that was useful against entrenchments and bunkers. The IS-2 went into service in April 1944 and was used as a spearhead by the Red Army in the final stage of the Battle of Berlin. The IS-3 served on the Chinese-Soviet border, the Hungarian Revolution, the Prague Spring and on both sides of the Six-Day War. The series eventually culminated in the T-10 heavy tank.

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1943 — 1990 Wikimedia, Wikidata
heavy tank, Chelyabinsk Tractor Plant, Kirov Plant,

44M Tas heavy tank, A7V-U, Durchbruchswagen 2, IS-1, KV-1, KV-2, KV-85, M103, Object 0-50, Object 266, Object 278, Unknown, Sirken Heavy Tank, SMK tank, T-100 tank, T-30, T14 Heavy Tank,