detachment of Pickett's division coming from Richmond to reinforce Lee.
They were speedily driven away, and several hundred captured. Warren
followed on the morning of the 21st, and reached Guiney's Station that
night without molestation. Burnside and Wright were retained at
Spottsylvania to keep up the appearance of an intended assault, and to
hold Lee, if possible, while Hancock and Warren should get start enough
to interpose between him and Richmond.

Lee had now a superb opportunity to take the initiative either by
attacking Wright and Burnside alone, or by following by the Telegraph
Road and striking Hancock's and Warren's corps, or even Hancock's alone,
before reinforcements could come up. But he did not avail himself of
either opportunity. He seemed really to be misled as to my designs; but
moved by his interior line--the Telegraph Road--to make sure of keeping
between his capital and the Army of the Potomac. He never again had
such an opportunity of dealing a heavy blow.

The evening of the 21st Burnside, 9th corps, moved out followed by
Wright, 6th corps. Burnside was to take the Telegraph Road; but finding
Stanard's Ford, over the Po, fortified and guarded, he turned east to
the road taken by Hancock and Warren without an attempt to dislodge the
enemy. The night of the 21st I had my headquarters near the 6th corps,
at Guiney's Station, and the enemy's cavalry was between us and Hancock.
There was a slight attack on Burnside's and Wright's corps as they moved
out of their lines; but it was easily repulsed. The object probably was
only to make sure that we were not leaving a force to follow upon the
rear of the Confederates.

By the morning of the 22d Burnside and Wright were at Guiney's Station.
Hancock's corps had now been marching and fighting continuously for