During the Second World War to counteract powerful German tanks such as Tiger and Panther, the hunting tank developed by the US Army is Hellcat. The open tower with focus search power is equipped with a powerful 76mm armoured cannon. To secure the space in the tower, the main loading part of the gun has been arranged with a 45 degree rotation around the barrel. In addition, the compact body is tracked for weight reduction, automatic transmission and torsion bar suspension are also introduced in the US tank for the first time. It demonstrated a top speed of more than 80 km/h through a star-shaped 9-cylinder petrol engine mounted at the rear of the bodywork, boasting the fastest chain vehicle in World War II. Hellcat production began in July 1943 and reached its first appearance on the Italian front in 1944. After that, he was sent to Northwest Europe and to the Pacific Front, defeating German tanks one by one with hit-and-away wars that utilize high-speed performance and firepower. As a spearhead of the tank defence battle, I contributed to the victory of the US Army.