The M4A3E8 Sherman earned the nickname 'Easy 8' from its experimental designation (E8). This new variant entered into WWII late in the war (Dec 1944). It sported the much vaunted HVSS (horizontal volute spring suspension) wide track and suspension upgrade. This gave the tank a much better ride and more stable firing platform. The M4A3E8 was so successful that it was the used during the post WWII years, in Korea, and even by many other countries during the cold war period.