In older movies they would trip horses or otherwise bring them to the ground for dramatic effect in battle scenes, but how do they do that nowawdays given the attention paid to animal welfare? AIUI you can’t do that these days, but it seems you still see it in some movies.
I can’t think of all the times I’ve seen it for properly state my case, but two that come to mind are these scenes from Django Unchained and The Magnificent Seven (2016). The scenes don’t look like CGI, and although there are many cuts, in TMS it does appear the horse is taken to the ground when D’Onofrio’s stuntman leaps on the rider. How are they doing these stunts?