The IS-2, or Iosif Stalin 2, was a Soviet heavy tank used during World War II. Introduced in 1944, it was designed to counter German armor, featuring a powerful 122mm gun and thick armor for enhanced protection. The IS-2 played a significant role in battles such as the Battle of Berlin, showcasing its effectiveness against enemy tanks and fortifications. The IS-2 was part of the IS tank family, which included other models like the IS-1 and IS-3. Its design emphasized firepower and survivability, making it a formidable opponent on the battlefield. The tank's legacy continued in post-war Soviet armored development.