[Bull Snipe]

The Union Army conscripted less than 10% of its total strength during the war. Actually, the Confederate Army drafted a slightly higher % of its manpower than the North did, about 11-12%. The Civil War, on both sides, was fought overwhelmingly by men who volunteered.

[DiogenesLamp]

The Union Army conscripted less than 10% of its total strength during the war.

It's population was four times larger, so that 10% would be equivalent to 40% for the South, (In numbers of men) wouldn't it?