Here's a neat link to a first hand account of Kit Carson scouts (
http://www.bonsai-american-style.com/Sam.htm).
From a quick glance and from what I know the KCs were ex-VC / NVA who came over on the Chu Hoi repatriation program and volunteered to work with US infantry units as scouts. Most acted as pointman for US squads and had a US slackman as a partner. They were generally dressed and equipped to look like VC / NVA to increase their utility as scouts. Hope that helps,
Pete