I think the biggest mistake we make is trying to make Horn into some sort of hero. From what I've heard from folks that sort of knew him he probably is what we'ld today call an unbonded child, suffering from some pretty severe ptsd. I believe if he liked you that's the way it was, but if he was ambivilant or disliked you , just his presence would probably make your skin crawl and your hair tingle.. His own big mouth got him convicted, when he shot down Otto Plaga's testimony placing Horn to far away from the Nickle place to have shot Willie that morning. He didn't particularly like or respect Plaga and in the end got him hung for something either one of the neighborkids, or the sheep herder Kels had fired did. The account of his comeupins in Baggs after his cleaning out Browns Hole is pretty interesting, dang near got his head cut off in a knife fight in the bar in Baggs.
There's a number of good books about the Johnson Co war. There are things tho that you almost need to be in or had some hard experience in the cow business, large ranches and absentee owners to fully grasp what was really going on.