Chiefly the Pershing tank was used by the U.S. Military during the Second World War. It was originally developed and considered as heavy tank T26 but after the war this was reclassified as medium, M26. The tank was named after General John J. Pershing who was the commander of the American Expeditionary Force in Europe during World War I. The Pershing was also used in the last stage of World War I and in Korean War. The M26 Pershing tank was the evolution of M4 Sherman. It was rarely seen in fighting scene but the most remarkable fight was in the Bridge at Remagen when it was used by the 9th Armored Division. In its strategic aspects in combating and fighting compared with M4 Sherman it was good defense weapon against the enemies against both the Tiger II and panther tanks. Even though, the M26 Pershing tank was not mechanically consistent and strong, it was superior match with T-34-85. It was obvious when it was pulled out in 1951 during the Korean War and replaced with more developed and upgraded container M46 Patton which has more powerful and reliable engine that can climb on mountainous terrain and move speedily on rocky roads. The innovation and improvement of M26 was continued with the M47 Patton followed by new design M48 Patton and M60 Combat Tank.

During World War II, the main tank used by the US and the other Allies was the M4 Sherman which was named after the name of Union General W. T. Sherman. Though the Nazis used heavier tanks in the latter part of the war, the medium sized M4 Sherman was proved to be reliable and extremely mobile in performance. The M4 was dispersed in thousands to the Allied Nations especially the Commonwealth and the Soviet Union by lend-lease act. This version of Sherman was manufactured widespread next to the Soviet T-34 in the time of World War II. The M4 which contributed to the triumph of the parent nation was not inferior to T-34.