Remember that the person that I replied to replied to a post that said:
"Firing a gun constitutes lethal force. Even brandishing a gun might constitute lethal force. Lethal force is only acceptable to prevent death or grievous bodily harm. ... If you shoot in self-defense, you must shoot to stop a threat, and shooting must be a proportionate response to that threat."
Legally and practically (if you're an armed member of a foreign army, you're far more likely to encounter armed opposition than some random guy in Nowheresville, UT), things are very different in a war zone. This is why threats of deadly force are often acceptable in a war zone, but unacceptable in times of peace.
