Australian warships (Destroyers) on the gun-line; and Centurion tanks in the field.
Most European nations using the Centurion preferred the 105mm gun, including Israel. However, in Vietnam the Australian Centurion tanks were armed with 20 pounders (84mm).
The Australian Navy sent it's Destroyers to fire support missions on the gun-line off the coasts of North & South Vietnam. The Australian Army sent it's 1st Armored Regiment, equipped with Centurion battle tanks, to supplement the US Army's Patton tanks.
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Australia sent a regiment of their Centurion tanks to Vietnam, along infantry and artillery.
Australia sent 4 Navy Destroyers and a regiment of Australian Centurion tanks into the Vietnam War.
Approximately 50 Australian Centurion tanks served in Vietnam. These medium tanks were the ONLY allied tanks other than US tanks serving in the war. The ARVN used US issued M41 Walker Bulldog light tanks. The Australian Centurions were part of the Australian 1st Armored Regiment and were equipped with a .50 caliber coax machingun (for ranging) and a 20 pounder main gun (84mm). The Australian Centurions also had a strange attachment to the rear of their tanks...an extra fuel tank shaped like a triangle. Most Centurian crewmen also removed the armored skirts from the port and starboard tracks.
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).
Australian armor (Centurian tanks) and armored personnel carriers (US M-113's), as well as regular infantrymen were sent to Vietnam.
One regiment of Centurion medium tanks, Infantry, Artillery, and some aviation assets.
Only the Centurion tanks that were purchased by the Australian Army. Australia sent a regiment of Centurions to Vietnam.
Australian Centurion tanks in Vietnam were purchased from Great Britain. The visual difference between the two are: Australian Centurions had no side skirts covering their tracks; and a 100 gallon external fuel tank was attached to the tail end of their tank.