On 1 May 1863 began yankee General Joseph Hooker's advance against CS General Robert E. Lee, planning to encircle Lee front and back. Didn't quite turn out that way. It was Lee's perfect battle, with the perfect subaltern, Stonewall Jackson. In the face of Hookers vastly superior numbers (over 2 to 1), Lee split his Army of Northern Virginia. On 2 May he sent Jackson on a flanking march. Stonewall caught a corps of the yankee army waving in the breeze, and rolled 'em up, routing the entire corps. By the morning of 6 May, Hooker had withdrawn.
On 2 May 1863 occurred one of the chief events that may have lost the South the war: Stonewall Jackson was wounded, tragically by his own troops. He lost an arm and seemed to rally, but succumbed to pneumonia on 10 May 1863. All that is in the providence of God, but it's hard not to guess that if Jackson had been at Gettysburg instead of Longstreet, Meade would have been demolished and we'd have our own country.