Rob Purvis was 20 years old when he, Butch, Larry and Billy—school buddies from Winnipeg—crossed the border and joined the United States Army in Fargo, N.D. It was 1968, they needed work and they yearned for adventure. They got work, all right, and more adventure than they had bargained for. They all wanted to go to Vietnam, and they all did.
Here is the article at Legion Magazine.