The Vietcong, also spelled "Viet Cong", were a political group and fighting army in South Vietnam in the 1950s and 1960s. This group was very active during the Vietnam War and relied on guerrilla warfare for many of its attacks. The group also organized locals in the regions in which it fought battles. This made it hard for enemies to distinguish between civilians and military. They also commonly moved and attacked at night and tended to terrorize the locals to get what they needed to survive.
The Viet Cong followed a communist ideology with some aspects of Marxism and nationalism. Their headquarters were located in Loc Ninh, South Vietnam and they were allied with North Korea and the Soviet Union during the war.