yeah didnt think it was possible anyways
i guess its not possible for a function/interaction/something to scan a creature if i.e. one "bodymass" stops living ?
i.e. if the function notices that the horse head gets chopped off the horse part would stumble on the groudn and the rider fly off... i.e. it removes the "Knight" and creates a dead horse and the rider gets spawned with a force flying a few tiles into the direction they were "facing" (the rider might still got saved somewhere when the "knight" was made from a person + horse interaction or so)
or when the horse looses the ability to stand/move a similar thing.
if the rider stops living it might spawn a horse and the saved person as dead or so.
(well probably would still be a problem to remove the dead "knight" from the military and reassign the new spawned rider back to the squad. not even talking about assigning the correct legend kills to the correct horse/rider again when one dies or so... all that would probably be quite a hassle to get working)
so ya as its not really possible to create knights that way... no point riding around on a dead horse.... erm... idea here haha.
well we can still assign war horses to swordsman. (maybe we can make armored war horses?)
maybe toady will at some point update the military stuff so we might be able to "assign" mounts to people similar to how we can assign war animals to people. maybe with a function in the military screen to "always be mounted" or "just be mounted on duty" similar to how the uniform works with always in uniform or civ cloths or so...
maybe the mount would be stored in assigned stables then similar to how armor/weapons would be stored in barracks armorstands/weaponstands offduty.
(not even sure if this even works atm... think they dont store their items in the barracks and just drop them? at least i think they did that some time ago, havent checked if that got updated at some point and they store their items properly now in weapon racks etc and reequip properly from there once on duty. *shrugs*)