It's worth noting that back before the automobile even city folks were probably above what our average equestrians are today. I don't know how well the average cavalry horse was trained but I get a sense from what I've read that the horses could be a bit rank but the riders, just like in the cowboy ranks were usually exceptional.
The long regarded notion from Hollywood that the cowboy or cavalryman rode his horse day in and day out is false. Depending on the work involved they may pick a different horse from the remuda each day. Be interesting to know the numbers of horses that the gov owned.
I cannot speak for Cavalry, but from what I understand most cowboys used 'company stock' as they could not afford their own horses. While I do believe that they would use different horses for different tasks (roping vs range riding/traveling) I know that you can develop a 'working relationship' with some of the rankest horses. My understanding is that on cattle drives, cowboys would have a minimum of two horses (one to wash and one to wear).
Granted, those old boys were good riders, but you start spending 8-10 hours on the same horse even 2 days a week, and you both start getting the hang of working together. It takes time, but it works. (have done it with a horse or two)
I once rode a horse that I feel like I had a nonverbal agreement with: I wont ask you to do anything that doesn't need done (run for no reason, spur you too much, cinch you too tight, etc); you won't try to buck/bite/kick me. After a while when she would start to get mad, I could just tell her 'quit that' and we were good to go. Of course, she lost me a few times before we worked it all out.
Worked for years. She was a top performer when she needed to be, but she was naturally lazy/bad tempered.
BTW the thread Posted by
opr1945 is a really good read. lots of good info on why folks carried that way.
Calvary draw means that you can get to the gun with either hand and is not in the way of your saber (primary weapon back then)
What I thought was one of the more interesting points is that because many people had served in the military, they brought home the holster with the gun and getting another holster was an expense for something that was already working fine.