I'm not sure if this is a bug or intended to work this way, but I was under siege by the enemy and it seemed like their units could almost move indefinitely, or they were just moving around randomly with no purpose.  It took about 3 minutes for their turn to be finished.

I have a link to my stream with a timestamp so you can see for yourself.  Again, I am not sure if this is a bug or intended.  The combat was a bit silly with the horses seemingly moving around in a circle for a while.

https://www.twitch.tv/videos/1057093609?t=04h43m38s

The Hunnic Hordes can move after an attack, making them quite evasive (some would say they are a pain in the ass, which is kinda the point I guess...)

But they're just moving around without attacking for most of the time, seemed pretty odd.  One would go up to my walls, then another moves around, then the first one moves away from my walls.