The M48 Patton was the workhorse tank of the U.S. Army and Marines and the South Vietnamese. Its 90 mm gun could deal with any armored opposition or fire beehive rounds to destroy enemy infantry. Carrying troops into VC country in 1965, the M48A3, left, was with 1st Battalion, 69th Armor Regiment. On the night of March 3, 1969, this unit was involved in one of the few clashes between U.S. and North Vietnamese tanks, when the NVA 202nd Armored Regiment, trying to attack the Ben Het Special Forces camp, lost two PT-76 tanks. (Getty Images)