Watch these tactics

Basically, they walk around and shoot at everything until being exchanged, because they ran out of ammo. It does not matter if any human or at least humanoid creature is visibly recognisable. 

So, do you understand why they are developing in NATO self driving autonomous ammo carrying robot?

Well, obviously no man can carry the required amount of ammo for progressing more than those 200 meters in 30 minutes and A Donkey would kick their ass in the first, but did well for US.