True. They did so in their mountainous home territory that Americans knew little about, and only had to fight a fraction of the whole US military. If we have a civil war with small militias vs the Military Industrial Complex on US soil we would get crushed rather quickly. Our only hope of possibly winning would be if a rather large part of the American military defected to our side, and brought a lot of military equipment and bases with them. Right now, that doesn't look like it is happening.