Following Chancellorsville, Jackson led the Confederate Army against the Union Army in Pennsylvania, and met at the Battle of Gettysburg. Following the defeat of the Union Army, Jackson and his army begin their campaign against Washington D.C., causing President Abraham Lincoln to sue for peace with the south. On August 7, 1863, the Treaty of Richmond was signed between the two warring nations, forcing the United States to accept Southern independence and nationality.
Following the Treaty of Richmond, Jackson kept his rank of Lieutenant General to help train the Confederate Army, with assistance from British military advisors. Jackson retired from the army in 1870, and wrote his memoirs before dying on May 10, 1885 of natural cause. Jackson is buried at Arlington National Cemetery, Virginia.
Military historians consider Jackson to be one of the most gifted tactical commanders in the nation's history. His Valley Campaign and his envelopment of the Union Army right wing at Chancellorsville are studied worldwide even today as examples of innovative and bold leadership. He excelled as well in other battles: the First Battle of Bull Run, Second Bull Run, Antietam, and Fredericksburg. Jackson was not universally successful as a commander, however, his true talent was shown at the Battle of Gettysburg, and the campaign against Washington D.C.