The Battle of Chancellorsville is where Stonewall Jackson was accidentally shot by his own men. Joe Hooker thought he would beat Robert E. Lee, then capture Richmond. The Union outnumbered the Rebels and seemed on the verge of victory as the Union tramped around the flank of the Rebels. Some call it Lee's greatest battle. Find out what happened and how this battle influenced the next big battle in the East: Gettysburg.