Communist allies: USSR supplied MiG17 & MiG 21 jets, as well as training NVAF pilots IN THE USSR (a two year training program); SAMs (Surface to Air Missiles); T-54 medium tanks and PT76 amphibious light tanks. Red China supplied MiG17 & Mig19 jets, as well as training NVAF pilots IN COMMUNIST CHINA; T-59 medium tanks and T-63 amphibious light tanks. Artillery, small arms, trucks, etc. were supplied as well.
Communist North Vietnam was supported by the Soviet Union and, later, by the People's Republic of China against the Capitalist US-supported South Vietnam.
North Vietnam was communist, supported by Russia, China, and Cuba.
The Soviet Union supported the Democratic Republic of Vietnam (North Vietnam) under Ho Chi Minh.
The communist superpowers supported the north with war material. The US supported the south with men & material. Reason: Cold War.
The Vietnam war is also called the Second Indochina War. The war was fought by between North Vietnam who were supported by China and Soviet Union and South Vietnam which was supported by the United States.
The Socialist Democratic - or Communist Party dominated North Vietnam politics, and continues to do so today over the unified Vietnam.
Asia
Presidents Eisenhower, Kennedy, Johnson, Nixon, and Ford supported South Vietnam. The Soviet and Red Chinese presidents supported their ally (with equipment)...North Vietnam.
If you're referring to the Vietnam War, then the war was mainly fought between North Vietnam and South Vietnam. North Vietnam was communist, and was supported by the Soviet Union, China, and Cuba. South Vietnam was capitalist, and was supported by the United States, Australia, the Philippines, and South Korea. Vietnam was also invaded and conquered, then colonized, by France in the 1800s.
North Vietnam aided Viet Cong or the National Liberation Front (NLF) in a guerilla war against the anti-communist. The army of the North was called People's Army of Vietnam or North Vietnamese Army.
I think the answer you want may be ARVN (Army of the Republic of Vietnam). It is pronounced and sometimes spelled as "Arvin."
The U.S. mainly supported the South but Australia and some neutral countries supported the South as well. The Soviet Union and China mainly supported the North.