Depending on how aggressively you want to pursue the war crimes charges, every single member of the 1st brigade, 24th infantry division during the 1991 highway

Depending on how aggressively you want to pursue the war crimes charges, every single member of the 1st brigade, 24th infantry division during the 1991 highway of death could potentially be found guilty of war crimes. They probably wouldn't be pursued because they were just following orders, but there's an actual precedent that disfavors that defense. Actively killing a retreating or disarmed military force is a big no-no, and it has nothing to do with accidental deaths or collateral damage. That's possibly a few thousand just from a single incident in the first gulf war, mind you. Even if you only prosecuted the officers involved, that is still at least 100. It's pretty easy to imagine the number hitting the thousands, when you add up all the wars and all of the behavior we have excused.