We used to cross train with the yanks a fair bit in the 70ties, they would always ask "hey were you in Vietnam" knowing full well, that is was not a brit affair.
The bog standard reply from the sweats was "No the vietcong did not need us, they could beat you on their own" hehe that used to shut em up.
Or yeh.......Birming Nam now fu#k off.
Yes we always got on with the yanks, although they were pissed off when they found their regimental goats head cut off, and nailed to the top of the Unit Flag pole.
heheheh caused some sh#t that one.
The guy who did it was most bemused at all the fuss he caused, as he said no biggy, he just wanted to see the look on the yanks faces.
Chris