The so-called confederate states called for an army of 100,000 men when the US Army was 18,000. And I know it galls you neo-confederate persons, but the CSA stumbled into the war by being unclever enough to fire the first shot.
Lincoln did a masterful job playing the secessionists for the fools they were, and he did a masterful job generally.
Oh, Lincoln never agreed not to resupply Fort Sumter. That's just a lie.
Walt