General Robert E. Lee surrenders to Ulysses S. Grant at Appomattox, effectively ending the American Civil War. Although other Confederate forces; some large units, some small had yet to surrender before President Andrew Johnson could declare that the Civil War was officially over. It was not until August 20, 1866, sixteen months after Lee's surrender at Appomattox, when President Andrew Johnson formally declared an end to the war. More
Source: Cheney, C. Emma (Clara Emma), No restrictions, via Wikimedia Commons