The M36 tank destroyer, formally 90 mm Gun Motor Carriage, M36, was an American tank destroyer used during World War II. The M36 was essentially an up-gunned M10 tank destroyer, replacing the former's 3 inch (76.2mm) M7 gun with a powerful 90 mm gun.
The M36 first served in combat in Europe in September 1944, where it proved to be a match for any of the tanks being fielded by the Germans. It also saw use in the Korean War, able to defeat any of the Soviet tanks used in that conflict. Some were supplied to the Koreans as part of the Military Assistance Program and served for years, as did re-engined examples found in Yugoslavia, which operated into the 1990s. Two remained in service with the Republic of China Army at least to 2001.
American soldiers usually referred to them as TDs for 'tank destroyers'. The US Army assigned it the nickname Jackson in 1944, but this name did not see use during the war, and only became popular decades later in the 1970s.