Right. And Roger's Rangers were an English unit during the F&I War.
One might say they were the inspiration for the Rangers (Darby's Rangers of WW2 fame), but they weren't really the original American Rangers.
The best book on the history of this period is Alan Ekert's "Wilderness Empire." He gives some great details on Roger's Rangers and on this very area in question.
Eckert is probably the most readable real historian I've ever run across.
Incidentally, his history on the frontier with Simon Kenton in a starring role should be of interest to anyone named "Kenton." It is another absolutely gripping history. "The Frontiersman."