I am currently reading the book "Ripcord", and came across an interesting anecdote concerning a patrol which was fleetingly seen, but not engaged.
I can't recall the exact details (but I can find it, and elaborate if anyone is interested), however basically an American (platoon?) element was on a hill, and had sent a squad out for X reason. The platoon commander, moving to link up with the squad, saw movement, and called to indetify himself ("curahee" or whatever they yelled), however he got an "okay" in response, not coming from his squad. Both himself and his squad saw the other patrol - however the situation was confused.
The patrol was stated as consisting of half a dozen NVA, in American helmets and with M16's, and a taller blonde white guy with M60.
There were no other American units in the area, however the Americans did use defected NVA sappers as guides.
It was suggested that the blonde man was an American defector, or perhaps an Eastern European advisor, however neither theories fully account for the American equipment and weaponry.
Can anyone expand on this?