The M4 Sherman medium tank was the primary tank used by the United States during World War II. It has been produced in a significant number of units ant it formed the backbone of United Stated armoured forces during at those time. it has been produced in several variants and versions The production of the  M4A3E8 versions started at the end of 1944. The M4A3E8, adopting the nickname Easy Eight, took several technical improvements enhancing  the Sherman operational effectiveness. The 76mm M1 high velocity gun had been flanked by a new horizontal volute spring suspension (HVSS) system able to ensure a better driving condition and to guarantee a higher speed. The “Easy Eight” participated to the final stages of World War II and took active part in the Korean War.