Bonaparte was a fan of the "whiff of grape" https://fr.wikipedia.org/wiki/Insurrection_royaliste_du_13_v... but we all know how that ended.
One obvious example of this is simply ammo. Military bullets don't expand as much as bullets available to cops or civilians. A military bullet is explicitly not allowed to be an expanding hollow point which really messes you up.
There are all sorts of international agreements on not using certain types of things in war - types of bullets are no exception.
In a civilian environment, the hollowpoints don't penetrate through walls and bodies as easily, meaning less risk of bystanders being harmed - and the local hospital has a lot more kit than your field medic.