Civil War By EthanLane Apr 12, 1861 Battle of Fort Sumter Fort Sumter Apr 20, 1861 Robert E. Lee assumes command of Southern forces Sep 17, 1862 Battle of Antietam Jul 1, 1863 The Battle of Gettysburg Battle of Gettysburg Apr 9, 1865 Gen. Robert E. Lee surrends to Gen. Ulysses S. Grant at Appomattox Courthouse Lee surrenders to Grant