A civilian is just a soldier who hasn’t put on a uniform in this scenario, and a soldier is just a civilian who has put on a uniform. You’re making a meaningless distinction in this context. There isn’t some sort of magic status that changes here - the same Japanese civilians were working at shipyards and ordinance factories to build weapons to kill American soldiers - you think we shouldn’t bomb those factories because we would kill Japanese civilians building weapons to kill American soldiers and that’s ok because the Americans were wearing a costume and we call them “military personnel”?

Nuts!

What does this have to do with Japanese war crimes and violations of the conventions you linked?

If I follow your logic, you believe that other countries should have nuked a couple of major US cities. I think that's.. not a great way to go.

That’s a strawman

Please define a strawman, in your own words. Because I don't think anyone would remotely qualify what OP said as a strawman.

We killed almost as many civilians when we firebombed Tokyo. Is the use of the atomic bomb somehow different in your mind?

I can think of three things off the top of my head, the scale enabled by them, the timeline of the deaths, and the residual effects.