nd Hancock to assault the enemy's works unless
there should be found in them but a very thin line of infantry which
could be surprised. In such event, Hancock was to operate so that
the cavalry might turn the Confederates on the Central or Charles
City road, but the continually increasing force of the enemy showed
this to be impracticable. The long front presented by Hancock's
corps and the cavalry deceived General Lee, and he undoubtedly
thought that nearly all of Grant's army had been moved to the north
side of the James River; and to meet the danger he transferred the
most of his own strength to the same side to confront his adversary,
thinning the lines around Petersburg to reinforce those opposing us
on the Central and New Market roads. This was what Grant hoped Lee
would do in case the operations of Hancock and myself became
impracticable, for Grant had an alternative plan for carrying
Petersburg by assault in conjunction with the explosion of a mine
that had been driven under the enemy's works from the front of
Burnside's corps.

Now that there was no longer a chance for the cavalry to turn the
enemy's left, our attention was directed to keeping up the deception
of Lee, and on the afternoon of the 28th Hancock's corps withdrew to
a line nearer the head of the bridge, the cavalry drawing back to a
position on his right. From now on, all sorts of devices and
stratagems were practiced--anything that would tend to make the
Confederates believe we were being reinforced, while Hancock was
preparing for a rapid return to Petersburg at the proper time. In
order to delude the enemy still more after night-fall of the 28th I
sent one of my divisions to the south side of the James, first
covering the bridgeway with refuse hay to keep the tramp of the horses
from being heard. After daylight the next morning, I marched this
division back again on foot, in full view of the enemy, to create the
impression of a continuous movement large bodies of infantry to the
north side, while the same time Kautz was made to skirmish with the
enemy on our extreme right. These various artifices had the effect
intended, for by the evening of the 29th Lee had transferred all his
infantry to the north bank of the James, except three divisions, and
all his cavalry save one.

The morning of the 30th had been fixed upon to explode the mine and
assault the enemy's works, so after dark on the evening of the 29th
Hancock hastily but quietly wi