ers, and making him wary of the situation of his army in the
Shenandoah, and, in the event of failure in this, to take advantage of
his necessary withdrawal of troops from Petersburg, to explode a mine
that had been prepared in front of the 9th corps and assault the enemy's
lines at that place, on the night of the 26th of July the 2d corps and
two divisions of the cavalry corps and Kautz's cavalry were crossed to
the north bank of the James River and joined the force General Butler
had there. On the 27th the enemy was driven from his intrenched
position, with the loss of four pieces of artillery. On the 28th our
lines were extended from Deep Bottom to New Market Road, but in getting
this position were attacked by the enemy in heavy force. The fighting
lasted for several hours, resulting in considerable loss to both sides.
The first object of this move having failed, by reason of the very large
force thrown there by the enemy, I determined to take advantage of the
diversion made, by assaulting Petersburg before he could get his force
back there. One division of the 2d corps was withdrawn on the night of
the 28th, and moved during the night to the rear of the 18th corps, to
relieve that corps in the line, that it might be foot-loose in the
assault to be made. The other two divisions of the 2d corps and
Sheridan's cavalry were crossed over on the night of the 29th and moved
in front of Petersburg. On the morning of the 30th, between four and
five o'clock, the mine was sprung, blowing up a battery and most of a
regiment, and the advance of the assaulting column, formed of the 9th
corps, immediately took possession of the crater made by the explosion,
and the line for some distance to the right and left of it, and a
detached line in front of it, but for some cause failed to advance
promptly to the ridge beyond. Had they done this, I have every reason
to believe that Petersburg would have fallen. Other troops were
immediately pushed forward, but the time consumed in getting them up
enabled the enemy to rally from his surprise (which had been complete),
and get forces to this point for its defence. The captured line thus
held being untenable, and of no advantage to us, the troops were
withdrawn, but not without heavy loss. Thus terminated in disaster what
promised to be the most successful assault of the campaign.

Immediately upon the enemy's ascertaining that General Hunter was
retreating from Lynchburg by way of th