That's some pretty strong language...and then he signs it "yours truly". It would be interesting to know the outcome, if you look up the census let me know. Or check some of the headstones and dates in the local cemeteries. I would be disappointed to know any of them were really bushwhackers.
Have you read the letter Edward Alexander Pace wrote to his father, he gives a description of the Pace family
"in a nut shell" he was perhaps my favorite so far.