1h 20min, apr 15, 1861 y - President Lincoln issues a public declaration that an insurrection exists and calls for 75,000 militia to stop the rebellion. As a result of this call for volunteers, four additional southern states secede from the Union in the following weeks. Lincoln will respond on May 3 with an additional call for 43,000+ volunteers to serve for three years, expanding the size of the Regular Army. (Timeline)