Confederate forces under the command of General Robert E. Lee and Maj. Gen. Thomas “Stonewall” Jackson had 40,000 fewer soldiers fighting at the Battle of Chancellorsville, Virginia than Maj. Gen. Joseph Hooker’s Union troops. Nonetheless, General Lee executed what historian John Murrin has labeled “the riskiest operation of his career” coming out victorious on May 8, 1863 after seven days of fighting. William Swinton, in his 1882 analysis Campaigns of the Army of the Potomac, credits Hooker with the mistake of taking a defensive stance and leaving his “right flank thrown out ‘in the air,’” and giving Lee the opportunity to attack. The Civil War Preservation Trust provides an interactive map of the battle, which shows the forces’ movements over the course of May 1st. Though the Confederacy won the Battle of Chancellorsville, Stonewall Jackson was mortally wounded by his own troops on May 2nd, “the event of the Chancellorsville conflict which caused intense sorrow to the enemy [the Confederate troops],” according to Samuel Bates’ The Battle of Chancellorsville (1882), and “was regarded as entailing the greatest injury to their cause.” The Virginia Military Institute, where Jackson was a member of the faculty from 1851 until 1861, has an online research center with an extensive Stonewall Jackson exhibit. Their Jackson exhibit includes a photo gallery, a collection of Jackson’s papers available as originals or transcriptions, a Jackson family genealogy, as well as an informational timeline and biography. The Battle of Chancellorsville has also been preserved as part of the Fredericksburg and Spotsylvania County Battlefields Memorial by the National Parks Service. The NPS website includes a wide variety of resources for teachers including “troop position maps” for May 2nd and May 3rd, links to General Lee and Hooker’s official reports, as well as an extensive list of suggested readings on the battle which range from firsthand accounts to children’s books.