Unfortunately for the NVA, the allies had aircraft everywhere all the time. Which is why they were smart enough not to field them in the open very much. The vast majority of NVA armor was knocked out by jets (or blasted into scrap metal by B52s). US Patton tanks did knock out some PT76 light tanks at Ben Het in '68, those were hit with the Patton's 90mm main guns. The Patton could fire 2 types of anti-tank rounds: HEAT & SHOT, but for a PT76 a standard 90mm HE round could do.
In 1971 (Laos invasion/Operation Lam Son 719) ARVN M41 light tanks engaged NVA armor, those guns were 76mm. In 1972 the US employed TOW anti-tank missiles fired from choppers. They knocked out over two dozen NVA tanks, both T54 & PT76. First time that system was used.
Green Berets at Lang Vei knocked out some NVA PT76 tanks with the standard M72 LAW (the US version of the communists RPG) in '68. The US LAW rocket is 66mm. Unlike the RPG, the M72 cannot be reloaded, it's "shoot and toss" (after you wreck it a bit so the enemy can't use it to fire 60mm mortars with).
None of those systems "destroyed" a tank, they just punched holes in them. Air strikes could destroy a tank. 750lb and 1000lb bombs can turn a tank into scrap metal. Choppers and jets also fired 2.75" rockets at tanks, but although the air force says they were effective, some GIs on the ground think otherwise.
President Johnson's visit to Australia during the Vietnam War was met by Australian anti-war protests.
Some "construction workers (hard hats)" made the news during the war, supporting the fighting men in Vietnam; some muscle was used during this support.
Rapid fire weaponry, more advanced airplanes, the blimp, tanks, and gas warefare
the two advances were the aircraft and the tanks
That's how the Marines got their men, in some cases. The Navy and Air Force could draft men too; but during Vietnam they didn't have to, there was a waiting list to join the Navy & Air Force.
President Johnson's visit to Australia during the Vietnam War was met by Australian anti-war protests.
Not everyone who served during the era of the Vietnam War went to Vietnam. Some remained in cantonment. Some participated in other military actions during this era (e.g., the occupation of the Dominican Republic, etc.). Some were stationed in other countries in support of operations in Vietnam. "Vietnam-era veteran" refers to them.
Australia sent some tank units and mechanized infantry units to Vietnam, as well as some infantry elements. The Australian's used British Centurian tanks and US supplied M-113 Armored Personnel Carriers. Australia lost approximately 600 men KIA during the war.
One regiment of Centurion medium tanks, Infantry, Artillery, and some aviation assets.
The Australians deployed Infantry, Artillery, some aviation assets, and a full squadron of Centurion battle tanks to Vietnam.
During the Vietnam War: 1. US forces used M48A3 Patton medium gun tanks and M551 Sheridan light tanks (Armored Airborne Reconnaissance Assault Vehicles). 2. ARVN forces (South Viet Army) used US supplied M41 Walker Bulldog light tanks. 3. Australian forces used Centurion medium gun tanks. 4. NVA (North Viet Army) used Soviet/Chicom supplied T54 or T55 medium gun tanks and PT76 Amphibious light tanks. During the early stages of the war, there were some old left over WWII Japanese Type 95 light tanks being used by the French supported forces.
helicopters, ak-47, the tanks, gernades, bombs, air strikes, air planes
Japan left some Type 95 light tanks there after they left. The North Vietnamese Army used some of those for their own Army.
Some "construction workers (hard hats)" made the news during the war, supporting the fighting men in Vietnam; some muscle was used during this support.
Australia sent B57 Canberra bomber crewmen, Infantry, Artillery, and a regiment of Centurion tanks.Australia sent over more than 50,000 men (total served) and a squadron of Centurian Tanks to assist the allies in defeating the communist forces in Vietnam.
Military conscription.
Cam Ranh's not too far north from Saigon, Australian Centurion tanks may have patrolled some of that area; mostly stationed around Saigon/Bien Hoa regions.