As I understand it these types of restrictions are "best effort". You're not supposed to set out to shoot someone with an inappropriate type of round from the g

As I understand it these types of restrictions are "best effort". You're not supposed to set out to shoot someone with an inappropriate type of round from the get-go (eg, using incendiary against a human), but if you are shooting it and a target presents itself, you aren't blocked from shooting it if it is a threat to you or your boys. None of this really matters in my opinion. Once the stuff is flying in both directions most restrictions (short of nuclear weapons) kind of get relaxed.