Despite initial reservations about the role
of armour in Vietnam, by early 1967 the US Army
had deployed the following:

HQ and HQ Troop,

2 light observation Helicopters
8 utility helicopters
Air Cavalry Troop
2 light observation Helicopters
8 utility helicopters

HQ and HQ Troop (281 personnel)
3 squadrons.
5 M113 APCs
3 AVLBs
2 light observation Helicopters
2 utility helicopters
3 Armored cavalry troops (each 170 personnel)
9 M48 tanks
3 M106 APC with 4.2" mortars
22 M113 APCs),
Tank Troop (102 personnel)
17 M48 tanks
3 M113 APCs), and Artillery Battery (143 personnel)
6 M109 155mm SP howitzers)

11th ACR was initially tasked with securing
the roads and provinces around Saigon but were soon
mounting operations off-road. Up until this time,
the enemy had been decimating convoys almost with
impunity. 11th ACR soon began to turn the tide in
this area and using their heavy firepower and high
mobility they would fight clear of an ambush while
protecting the vehicles they were escorting. Within
the center of their formation the unarmored vehicles
could take refuge.