The M48 Patton is a main battle tank that was designed in the United States. It was the third tank to be officially named after General George S. Patton, commander of the U.S. Third Army during World War II and one of the earliest American advocates for the use of tanks in battle It was a further development of the M47 Patton tank. The M48 Patton was in U.S. service until replaced by the M60. The M48 served as the U.S. Army and Marine Corps's primary battle tank during the Vietnam War. It was widely used by U.S. Cold War allies, especially other NATO countries.
The M48 Patton tank was designed to replace the previous M47 Pattons and M4 Shermans. Although largely resembling the M47, the M48 Patton was a completely new tank design. Some M48A5 models served well into the 1980s with American forces, and many various M48 Patton models remain in service in other countries. The M48 was the last U.S. tank to mount the 90 mm tank gun, with the last model, the M48A5, being upgraded to carry the new standard weapon of the M60, the 105mm gun.
Info: M48A3 Patton Marine 5th Battalion, Vietnam 1968