Helldritch
Hero
Have you never heard about a bad or obnoxious commander getting killed "accidentally" by a lost bullet from his own company/unit? It did happen, does happen and will continue to happen. This why the military investigate any officer's death when it is possible. Because such things happen in real life combat. Is it so hard to believe that demons, the epitome of chaos and evil can do it?Exactly how often do real life military squads or platoons, or the equivalent units in less organized forces, break down into squabbling between their units in the middle of a 30-second long deadly fight? That's what 'chaotic creatures don't coordinate and cooperate during combat' actually translates to in real life, not large-scale social movements fracturing into subgroups over longer-than-a-minute times and without the threat of guns directly firing at them.
I'm also confused by the implicit statement that, since this appears to be your characterization of Chaotic demons, it wouldn't apply to devils. Are you really saying that you'd expect devils "without the presence of strong leadership" to avoid fracturing into squabbling subgroups, even though that happens all the time in published works? If it's not a difference between devils and demons based on their alignment, what does it have to do with this specific conversation?
I'd also suggest reading about real-life political ideologies and what happens when small groups of them are involved in combat situations, because real people don't behave like you're saying. I mean, even the 'so over the top it would be unbelievable in a game' Chaotic Evil nation of Nazi Germany fielded military units that used excellent tactics all the way from small unit to operational level.
And as was so often said:" Evil feeds upon itself."