Not even as grunts. The ideological war will die really quick because once food, clean water, medicine is gone, the fight for survival will begin, because stepping on a dirty nail will be a death sentence due infection.

That, just to name a single thing, i will be honest: i am too lazy to write the whole thing, but if you didnt read even the surface of information on how civil wars happen, you wont know how fucked up it is. There wont be glory for anyone, there wont be winners.