M60 '61

By the end of the 1950s, the differences between the Soviet T-54/55 series of tanks and the M48 Patton were clear. Any updates to the M48 would need stronger armor and greater firepower to hold their own in battle, along with improved fuel efficiency and range. Enter the M60, which featured reinforced armor and the new 105mm M68 cannon. The M60 series became the first true U.S. main battle tank during the Cold War and was produced in considerable numbers.