No worries. War is unavoidable at times - dictators exist, people get desperate, and so on. There are legalities involved, and they are a concern but aren't my main concern. Morally, there's a difference to me between killing someone because I hate them and killing someone because I'm a combatant and so are they. There are strict rules to war that help are supposed to keep things largely ethical - I understand war is never going to be "clean". Policies like rules of engagement, being able to surrender, treatment of POWs, genuinely avoiding targetting civilians (the world could use more of that right now) and stopping when your country tells you to all matter to me.
Soldiers are not asked to make decisions about who they'll kill (I mean which armies, not rules of engagement), so the individuals are not being relied upon to determine justice. That is a big difference from vigilantism, where a person or mob of people decides who lives and dies. Ideally the leaders of the military and country are making sure war is a necessary last resort and conducted according to rules, and if that isn't happening then other nations should be condemning and opposing them. It's like how I think nations need prisons, but I don't think I should be allowed to take someone hostage because I'm pretty sure they deserve it.


Historically it's leaders like presidents, governors, legislative bodies, and generals. Not forum posts.