a cool fact about the US Civil War that snobbish historians won't tell you

From 1861: The Civil War Awakening by Adam Goodheart:

Although it is often said today that half the U.S. Army resigned in 1861 to join the Confederacy, this is untrue. Very few enlisted men in peacetime came from the South. Only twenty-six privates out of all sixteen thousand ended up defecting to the rebels—compared to more than three hundred out of the thousand or so men in the officer corps.