in 1861 more than 1/10th of what would later become the army of northern virginia owned slaves— 1 in 12 enlisted men and over half of the officers.

"only" 1 in 20 white southerners in the confederacy personally owned slaves on paper, but this is like making an org chart of the institution of slavery & only counting senior management.

if you look at the 1860 us census & expand the analysis to slave owning households of the confederacy, the rate was closer to 1 in 3.