IS-2
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The IS-2 is a Soviet heavy tank, the second of the IS tank series named after the Soviet leader Joseph Stalin. It was developed and saw combat during World War II and saw service in other Soviet allied countries after the war.
The KV-85 was a stop-gap solution until the introduction of the IS series. Note the modified KV chassis with the removal of the hull machine-gunner/ radio operator's station with one operated by the driver, and the driver's station slightly centered at the front; a staple design of all IS-series tanks.
IS-85 (IS-1) Prototype equipped with D-5T gun. Later IS-2 converted models were replaced with the 122mm D-25T gun whilst retaining the same hull.
Line drawing of IS-2
Armor plan of IS-2, models 1943 (top) and 1944 (bottom).
T-34
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The T-34 is a Soviet medium tank from World War II. When introduced, its 76.2 mm (3 in) tank gun was more powerful than many of its contemporaries, and its 60-degree sloped armour provided good protection against anti-tank weapons. The T-34 had a profound effect on the conflict on the Eastern Front, and had a long-lasting impact on tank design. The tank was praised by multiple German generals when encountered during Operation Barbarossa, although its armour and armament were surpassed later in the war. Its main strength was its cost and production time, meaning that German panzer forces would often fight against Soviet tank forces several times their size. The T-34 is also a critical part of the mechanized divisions that form the backbone of the Deep Battle Strategy.
T-34-85 medium tank
BT-7, A-20, T-34 (model 1940), and T-34 (model 1941)
Medium tank A-32
Pre-production prototype A-34 with a complex single-piece hull front.