This looks like a good read on this subject.
https://gatdaily.com/review-the-morality-of-self-defense-military-action-by-david-kopel/
https://www.amazon.com/Morality-Sel...tion-Judeo-Christian/dp/1440832773/ref=sr_1_1
https://gatdaily.com/review-the-morality-of-self-defense-military-action-by-david-kopel/
https://www.amazon.com/Morality-Sel...tion-Judeo-Christian/dp/1440832773/ref=sr_1_1