The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 2: Two Years of Grim War.
Francis Trevelyan Miller, Ed.

Lee was between two fires — Hooker in front and Sedgwick in the rear, both of whose forces were too strong to be attacked simultaneously. Again the daring leader of the Confederate legions did the unexpected, and divided his army in the presence of the foe, though he was without the aid of his great lieutenant, “Stonewall” Jackson.

During the night Lee made his preparations, and when dawn appeared in the eastern skies the movement began. Sedgwick, weak and battered by his contact with Early on the preceding afternoon, resisted bravely, but to no avail, and the Confederates closed in upon him on three sides, leaving the way to Banks's Ford on the Rappahannock open to escape. Slowly the Federals retreated and, as night descended, rested upon the river bank. After dark the return to the northern side was begun by Sedgwick's men, and the Chancellorsville campaign was practically ended.

The long, deep trenches full of Federal and Confederate dead told the awful story of Chancellorsville. If we gaze into these trenches, which by human impulse we are led to do, after the roar and din of the carnage is still, the scene greeting the eye will never be forgotten. Side by side, the heroes in torn and bloody uniforms, their only shrouds, were gently laid.

The Union loss in killed and wounded was a little over seventeen thousand, and it cost the South thirteen thousand men to gain this victory on the banks of the Rappahannock. The loss to both armies in officers was very heavy.

The two armies were weary and more than decimated. It appeared that both were glad at the prospect of a cessation of hostilities. On the night of May 5th, in a severe storm, Hooker conveyed his corps safely across the river and settled the men again in their cantonments of the preceding winter at Falmouth. The Confederates returned to their old encampment at Fredericksburg.