If such orders were to come down, you would see a schism within the military on par with the breakup of the old US Army in the days leading up to the First American Civil War. Contrary to what modern "historians" like to state, loyalties were not defined by North and South. There were many officers from the North who sided with the Confederacy and many from the South who sided with the Union.
“breakup of the old US Army in the days leading up to the First American Civil War”
Do you have any recommendations for good reading on that subject? That’s a subject I just haven’t come across much and I am very interested in. Thanks.