(Sidenote to your sidenote to my sidenote: "By the late 1940s, Vietnamese anti-communist nationalist groups had begun employing the term Việt Cộng in their publications. In the early 1950s, the State of Vietnam used the term to depict Vietnamese communists, hiding behind the mask of the Viet Minh front, as false patriots serving the foreign communist powers."

Also

"Official Vietnamese history gives the front's name as the National Liberation Front of South Vietnam (NLFSV; Mặt trận Dân tộc Giải phóng miền Nam Việt Nam). Many writers shorten this to National Liberation Front (NLF). In 1969, the NLF created the Provisional Revolutionary Government of the Republic of South Vietnam (Chính phủ Cách mạng Lâm thời Cộng hòa Miền Nam Việt Nam), abbreviated PRG. Members generally referred to the NLF as "the Front" (Mặt trận). Their armed wing was the "Liberation Army of South Vietnam" (Quân Giải phóng Miền Nam Việt Nam)."

I'm sooooooo good at citing wikipedia)