The NVA had about 3 regiments of armor; their regiments were equivalent to a US tank battalion, roughly 57 tanks.
The US had about 600 Pattons and 200 Sheridans in Vietnam, the ARVNs roughly 400 M41 Walker Bulldog light tanks and the Australians landed about 50 of their Centurion medium gun tanks. Australian/ARVN regiments also equalled US battalions.
Another words a US regiment was about two to four times larger than an NVA, Australian or ARVN regiment.
WWII thru Vietnam was 5 tanks per platoon. 3 tanks led by the LT was the heavy section, 2 tanks led by the platoon sergeant was the light section. After Vietnam, everything changed.
Australia deployed a regiment of their Centurion tanks to Vietnam.
Where they are needed to be used XD
Australia sent Warships (Destroyers); Infantrymen and Centurion tanks to Vietnam.
Australia used Centurion tanks purchased from Great Britain during the Vietnam War.
Vietnam War tanks such as the M48 Patton and M551 Sheridan tanks had roughly 300 gallon fuel tanks.
Both USMC and US Army tank battalion in Vietnam had 57 to 58 Patton tanks per battalion. 17 Pattons per company (5 per platoon, 2 in headquarters platoon).
Australia sent one squadron of Centurion tanks and infantry and artillerymen to South Vietnam.
When NVA tanks parked on the front lawn of South Vietnam's capital on 30 April 1975.
NVA tanks invaded Saigon and captured that city (the capital of South Vietnam).
During the Vietnam War, US Army & Marine tank battalions consisted of 57 to 58 Patton medium tanks. US Armored Cavalry Squadrons in Vietnam consisted of about 27 Pattons per Troop, then switched to M551 Sheridans in 1969; again, 27 tanks per Troop (company), only Sheridans instead of Patton tanks. Roughly 81 Sheridans per squadron.
The allies fielded about 2,000 tanks in Vietnam: M48 Patton medium tanks, M551 Sheridan tanks, M41 Walker Bulldog light tanks, and about 54 Australian Centurion medium gun tanks. The NVA had about 3 regiments of armor (prior to 1972): T54 medium tanks (includes Chicom Type 59s) and PT76 amphibious light tanks (includes Type 63s).