Vietnamese army were supported by the Soviet Union, China and other communist allies. While the South Vietnamese army were supported by United States, South Korea, Australia, Thailand and other anti-communist allies. How the war started was that the North Vietnamese government and the Viet Cong (also known as the National Liberation Front, or NLF) were fighting to reunite the country.
Vietnamese army were supported by the Soviet Union, China and other communist allies. While the South Vietnamese army were supported by United States, South Korea, Australia, Thailand and other anti-communist allies. How the war started was that the North Vietnamese government and the Viet Cong (also known as the National Liberation Front, or NLF) were fighting to reunite the country.