The tremendous success of General Robert E. Lee’s daring maneuvers at Chancellorsville was tempered by the death of one of his most valuable subordinates, General Thomas J. “Stonewall” Jackson. While on a nighttime reconnaissance ride, Jackson was mistakenly fired upon by his own troops. His arm was successfully amputated, but pneumonia proved fatal. Before Jackson’s death Lee purportedly lamented, “He has lost his left arm but I my right arm.” With Jackson gone, Lee struggled to find another corps commander he trusted so completely. The loss of Jackson was felt deeply by his men and mourned by Confederates throughout the South.