Darien, GA . [4] [5] July 1, 1863 Battle of Gettysburg, PA. July 4, 1863 Federal forces under the command of Ulysses S. Grant capture Vicksburg , MS. July 7, 1863 General Braxton Bragg entered Chattanooga, TN, with most of the Confederate Army of Tennessee . August 4, 1863 Col. Lemuel