doctors at lincoln's bedside

[Gene C]

I would think that if Boyle was such a good doctor, the confederacy would use him in that capacity rather than as a provost marshal.
"Boyle, a noted Washington medical doctor, was now provost marshal for northern Virginia and had commanded the Gordonville camp since 1862".
(David Keehn's "Knights of the Golden Circle", page 183, from link in post #62)

Seems like well after the war, the so called Confederate undercover operatives really grew in numbers. I'm not saying he wasn't a spy, but if the confederates had even just half the number of real spies as so many claimed to be, they might have won the war. (Just using McClellan math )