Who did the Vietcong fight fight for in the Vietnam War?

The Viet Cong (VC) were Communist sympathizers living in SOUTH Vietnam. Very organized, wearing what-ever uniforms and using what-ever weapons they could get their hands on; and fighting primarily as organized guerillas against the Government of South Vietnam. The VC were pretty well destroyed as a fighting force during the TET offensive of 1968; and the war fairly well shifted to the NVA (North Vietnamese Army), after 1968.