Civil WarTimeline By pshelto3 Nov 6, 1860 Abraham Licoln is elected President The first Republican Dec 20, 1860 South Carolina secedes from the Union The First to Act Apr 12, 1861 Attack on Fort Sumter The Civil War begins! Jul 21, 1861 First Battle of Bull Run Bull Run Mar 8, 1862 The Monitor vs. The Merrimack Mordern warfare is changed forever. Aug 29, 1862 Second Battle of Bull Run John Pope Sep 17, 1862 Battle of Antietam The bloodiest day in U.S. history. Jan 1, 1863 Emancipation Proclamation President Lincoln issues the final Emancipation Proclamation Jul 1, 1863 Battle of Gettysburg Confederates are defeated.