The guerrilla fighters who launched an insurgency in Vietnam were the Viet Cong.
Explanation:
The National Liberation Front of Vietnam or Viet Cong was an organization formed in 1960 by the guerrillas who supported the socialist government of HoChi Minh who received support from the USSR.
The term Viet Cong was used to refer to armed insurgents and political dissidents who fought against the government of the Republic of South Vietnam (allied to the US) during the Vietnam War.
Under its control, the Viet Cong also included many civilians, including mayors, clerks and school teachers.
