In our research we found two variants of the American Leopard CAMO used in the early stages of the Vietnam War by American Special Forces. The Civilian Irregular Defense Group program (CIDG, pronounced "sid-gee") was a program developed by the U.S. government in the Vietnam War to develop South Vietnamese irregular military units from minority populations. The CIDG program was devised by the CIA in early 1961 to counter expanding VC influence in the Central Highlands. The CIDG Leopard pattern camouflage uniform was issued to American Special Forces working with the CIDG in the early 1960's and was later replaced by Tiger Stripe.