Major-General John Sedgwick, ordered to join Hooker at Chancellorsville, first took Marye's Heights and then moved to the vicinity of Salem Church, four miles west of Fredericksburg.  There he was met in the evening by a Confederate blocking force which repelled all his frontal attacks.  The next morning, Confederate reinforcements arrived to drive Sedgwick back across the Rappahannock and reoccupy Marye's Heights. (By John Osborne)  

With Hooker facing defeat at Chancellorsville, he ordered Major-General John Sedgwick to advance from Fredericksburg and reinforce him. To do so Sedgwick had to take Marye's Heights outside the town which he did around noon on the third bloody assault.  About 1,500 men from both sides became casualties.  Sedgwick's VI Corps then moved on but was turned away in the evening by Confederate forces under General Jubal Early.  (By John Osborne)  

With the Union Army licking its wounds from the previous evening, Confederate forces pressed home their attacks at dawn.  Facing determined infantry assaults and pounded by superior Confederate artillery power, Hooker's Army of the Potomac was forced by days end to abandon Chancellorsville and pull back to defensive positions around the United States Ford on the Rappahannock River. The day saw some of the fiercest fighting of the Virginia campaign.  (By John Osborne)

While returning at dusk from surveying enemy positions after his brilliant flanking movement that turned the Battle of Chancellorsville, Confederate Major-General T.J. "Stonewall" Jackson and his party were challenged and mistakenly fired on by men of the 18th North Carolina Infantry. Two volleys killed one of Jackson's aides and he himself was hit by three bullets.  Two wounds to his left arm required its amputation. Before he could recover, he contracted pneumonia and died on May 10, 1863. He was thirty-nine years old. (By John Osborne)