With the current World of Tank special on the IS-3, IS-8, and IS-7 in full swing I have decided to write a post reviewing the IS series of tanks. The Iosif Stalin (IS) family of tanks was a series of heavy tanks developed beginning during the second world war.  Often written as IS, or “ИС”  in Cyrillic, the acronym means Iosif Stalin, or Joseph Stalin; the namesake of the Soviet leader at the time. With first deliveries beginning in October 1943 with the IS-1; this series would go on to see many models including the IS-2, IS-3, IS-4, and IS-10 or T-10 as it was renamed.

IS-3

IS-3

IS-4

IS-4

IS-6

IS-6

T-10/IS-10

T-10/IS-10

Models
Not including foreign operator variants, the IS family included 7 distinct variants including prototypes as well as 4 upgraded IS versions.
IS-85 (IS-1) – Initial 1943 model armed with an 85 mm gun.
IS-100 – A prototype variant armed with a 100 mm gun.
IS-122 (IS-2 model 1943) – 1943 model, armed with an A-19 122 mm gun.
IS-2 model 1944 (or “IS-2m”) -1944 design with D25-T 122 mm gun.
IS-2M – modernization of IS-2 tanks circa the 1950s.
IS-3 – 1944 armour design, internally similar to IS-2 model 1944, and produced concurrently. Roughly 350 built during the war, but did not participate in the war.
IS-3M – Modernization of the IS-3 circa 1952.
IS-4 – 1944 design which competed with the IS-3 design. Roughly 250 built after the war.
IS-6 – A prototype design using an experimental electrical transmission.
IS-7  – 1946 prototype design. The IS-7 model 1948 variant was armed with the 130 mm S-70 naval cannon.
IS-10 – 1952 design; renamed T-10 in the wake of Stalin’s death.

Operators
In addition to the USSR, the IS family would see service with the following nations: China, Cuba, Egypt, Nazi Germany, North Korea, Poland, Romania, and South Ossetia. In some cases these nations acquired their IS tanks as prizes of war.

Works Cited:

1. “Iosif Stalin tank.” Wikipedia The Free Encyclopedia. Wikimedia Foundation, Inc., 5 May 2013. Web. 5 May 2013. <http://en.wikipedia.org/wiki/Iosif_Stalin_tank>.

2. Nikiforov, Alexei . “IS-7: the armored wonder?.” PKKA-CA. N.p.. Web. 6 May 2013. <http://pkka.narod.ru/is-7.htm>.

3. “Тяжелый танк ИС-6 » Общественное поисковое объединение «Война-1945».” Общественное поисковое объединение «Война-1945». Поисковое общественное объединение «Война-1945», 18 Apr 2011. Web. 6 May 2013. <http://war1945.ru/domestic-vehicles/518-tyazhelyy-tank-is-6.html>.