five o'clock in the afternoon
Lee would open the battle and hold Hooker at close range . Jackson would `` retreat . '' Out of sight , he would turn , march swiftly ten miles around their right wing and smash it before sundown . At five o'clock in the afternoon while Lee held Hooker 's front , Jackson 's corps crept into position in Hooker 's rear . The shrill note of a bugle rang from the woods and the yelling gray lines of death swept down on their unsuspecting foe . Without support the shattered right wing was crushed , crumpled and rolled back in confusion . At eight o'clock Jackson , pressing forward in the twilight , was mortally wounded by his own men and Stuart took his command .