But your argument effectively allows or forgives everything in war. Just because a person is in a war does not mean to say all is permitted.
It seems to me that you’re searching for universal standards of justice established by consensus that will apply in all places and at all times, whether or not war (or even threats of violence) are mitigating factors.
Can’t succeed. Part of dealing with war is having to deal with ambiguity. That doesn’t mean that standards get thrown out the window; it’s simply a recognition that (for example) “committer of war crimes” and “protector of the populace” can sometimes become synonyms in the case of war.
That’s why I raised the example of Milosevich. Want another one? Vlad Tepes. By any reasonable analysis of the historical account, the man was a monster who engaged in a pogrom of ethnic cleansing against the Ottomans resident in the Romanian geography.
Vlad is prominently entombed in the sanctuary of a lovely Orthodox monastery on an island outside of Bucharest. The Romanian Orthodox Church venerates him as a saint.