Hyup - U.S. history relayed third hand via a second hand quote from furriners (McIntyre recounting of Sven Cedergren history) can contain errors. There were 'green berets' in the Korean War - they just weren't U.S. forces - they were worn by Brits of the 41 Independent Commando - Royal Marines. Sven was in the U.S. Army - served in the Korean War- and may have fought with (ie.alongside) those 'green berets'.
Ah - Francis' choice of an opening quote to his fine hunting piece contained an inaccuracy that detracted (for at least two folk here) from his wonderful piece.
C'est la douche!

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...