No it is not unimaginable it has happened before, and will again.

The current Military Forces have their Lees, Jacksons, and Davises, and as I figure it the best of the US military will choose their Oath to defend the Constition over their loyalty to the FEDGOD. I know what side my two kids and son in law and niece and nephew will be on.

Instead of an Industrial group of States fighting an Agrian group of States, it will be the producers vs. the takers. Place your bets on that match up.

Maybe Canada will get a new group of "Subjects" out of it, you will be welcomes to them.

Mine's a tale that can't be told, my freedom I hold dear.