[@Mattchstick] When I bump into something I don't know, I usually google it. So I just googled horse stables. The first immages I saw were of children's toys. LOL The next group of images which filled up the first page were of immaculate beautiful horse stables owned by elite billionaires. Neither of these examples would be accurate.

I remember visiting my grandfather's farm as a child. He had cows. I know horses don't use stanchions like cows, but they do get their own space and there is a lot of hay on the floor. One more thing, it stinks to holy hell. Someone needs to shovel the poo out of the area where they do their business every day and usually more often than once a day. There are large wooden bins containing corn or whatever feed the horses eat besides hay. There are usually individual buckets available for water. There will also be a tackle barn nearby where the horse's bit, barding, tackle, saddles (all leather goods) as well as any other accoutrements would be available for steeds used in combat in this setting.