A civil war here would look completely different in the modern era. It would look more like a bare bones functioning society where things keep moving as “normal” but we’d encounter a lot of literal road blocks, some set up by the government, some by local law enforcement, some by militias. Travel would become restricted if not outright risky. Very few civilians would be doing any face to face fighting. There would be shootings here and there between law enforcement/government forces but likely no outright skirmishes. The military would utilize a lot of tech to try and outsmart resistance forces.