If you have the power to start a war, and you did start and aggressive war against other state, I'd say it's quite a stretch to be called a civilian. You're the one that deserves being taken down the most, as aggression is the highest crime, from which all other crimes follow.
"To initiate a war of aggression, therefore, is not only an international crime; it is the supreme international crime differing only from other war crimes in that it contains within itself the accumulated evil of the whole."