U.S. forces effectively used armor for mutual support, not only with infantry but also with the different forms of mechanized ordnance themselves. During this operation by members of 1st Battalion, 10th Cavalry Regiment, an M48 Patton tank, left, joins an M106 mortar carrier with an M30 4.2-inch mortar on a rotating turntable in the rear bed, and an M113 armored cavalry assault vehicle, as all three advance into Viet Cong-held territory. (Kenneth Hornfield Collection)