es River, the
alarm being intensified by the retreat, after the defeat at Yellow
Tavern, of Stuart's cavalry, now under General Fitzhugh Lee, by way
of Ashland to Mechanicsville, on the north side of the Chickahominy,
for falling back in that direction, left me between them and
Richmond.

Our march during the night of the 11th was very tedious, on account
of the extreme darkness and frequent showers of rain; but at daylight
on the 12th the head of my column, under Wilson, reached the
Mechanicsville pike. Here Wilson, encountering the enemy's works and
batteries manned by General Bragg's troops, endeavored to pass. In
this he failed, and as soon as I was notified that it was
impracticable to reach Fair Oaks by passing between the works and the
Chickahominy, Custer's brigade was directed to make the crossing to
the north side of the Chickahominy, at the Meadow bridge. Custer
moved rapidly for the bridge, but found it destroyed, and that the
enemy's cavalry was posted on the north side, in front of
Mechanicsville. When this information came back, I ordered Merritt
to take his whole division and repair the bridge, instructing him
that the crossing must be made at all hazards; for, in view of an
impending attack by the enemy's infantry in Richmond, it was
necessary that I should have the bridge as a means of egress in case
of serious disaster.

All the time that Merritt was occupied in this important duty, the
enemy gave great annoyance to the working party by sweeping the
bridge with a section of artillery and a fire from the supporting
troops, so a small force was thrown across to drive them away.
When Merritt had passed two regiments over, they attacked, but
were repulsed. The work on the bridge continued, however,
not-withstanding this discomfiture; and when it was finished, Merritt
crossed nearly all his division, dismounted, and again attacked the
enemy, this time carrying the line, of temporary breastworks, built
with logs and rails, and pursuing his broken troops toward Gaines's
Mills.

While Merritt was engaged in this affair, the Confederates advanced
from behind their works at Richmond, and attacked Wilson and Gregg.
Wilson's troops were driven back in some confusion at first; but
Gregg, in anticipation of attack, had hidden a heavy line of
dismounted men in a bushy ravine on his front, and when the enemy
marched upon it, with much display and under the eye of the President
of the Confederacy, this conc