Why do Vietnam Veterans Call VC Charlie?

Answer 1

The explaination I was given (in military communications school) was that the Viet Cong were often called abbreviated in messages as VC. In the military, the phonetic alphabet would be used to send the radio message 'Victor Charlie' which got shortened to just Charlie.

Answer 2

The American Soldiers called them "Victor Charlie" because both words have VC for initials. Sometimes the "Victor" would get dropped, just leaving "Charlie." In the military's phonetic alphabet, Victor is the word for V and Charlie is the word for C. There's a word for every letter...say your callsign today is V3C45 and the battalion supply sergeant's was E5N76. If you need to order a case of rations and two cans of water, you'll call the supply sergeant by saying "Echo Five November Seven Six, this is Victor Three Charlie Four Five...over."