Abraham Lincoln was the 16th president and most important figure of the Civil War as the leader of the Union. He put Ulysses S. Grant in charge of the northern armies and issued the Emancipation Proclamation, freeing slaves in Confederate states. Jefferson Davis led the Confederacy as its president but made poor leadership decisions. Robert E. Lee surrendered to Grant, ending the war after being trapped at Appomattox Court House while fighting brilliantly for the Confederacy. Ulysses S. Grant rose through the ranks to become the Union's most successful general, cornering Lee and winning the war. Thomas "Stonewall" Jackson was one of the Confederacy's most dependable generals but his death was a major blow