he was. The mine was constructed and
ready to be exploded, and I wanted to take that occasion to carry
Petersburg if I could. It was the object, therefore, to get as many of
Lee's troops away from the south side of the James River as possible.
Accordingly, on the 26th, we commenced a movement with Hancock's corps
and Sheridan's cavalry to the north side by the way of Deep Bottom,
where Butler had a pontoon bridge laid. The plan, in the main, was to
let the cavalry cut loose and, joining with Kautz's cavalry of the Army
of the James, get by Lee's lines and destroy as much as they could of
the Virginia Central Railroad, while, in the mean time, the infantry was
to move out so as to protect their rear and cover their retreat back
when they should have got through with their work. We were successful
in drawing the enemy's troops to the north side of the James as I
expected. The mine was ordered to be charged, and the morning of the
30th of July was the time fixed for its explosion. I gave Meade minute
orders (*38) on the 24th directing how I wanted the assault conducted,
which orders he amplified into general instructions for the guidance of
the troops that were to be engaged.

Meade's instructions, which I, of course, approved most heartily, were
all that I can see now was necessary. The only further precaution which
he could have taken, and which he could not foresee, would have been to
have different men to execute them.

The gallery to the mine was over five hundred feet long from where it
entered the ground to the point where it was under the enemy's works,
and with a cross gallery of something over eighty feet running under
their lines. Eight chambers had been left, requiring a ton of powder
each to charge them. All was ready by the time I had prescribed; and on
the 29th Hancock and Sheridan were brought back near the James River
with their troops. Under cover of night they started to recross the
bridge at Deep Bottom, and to march directly for that part of our lines
in front of the mine.

Warren was to hold his line of intrenchments with a sufficient number of
men and concentrate the balance on the right next to Burnside's corps,
while Ord, now commanding the 18th corps, temporarily under Meade, was
to form in the rear of Burnside to support him when he went in. All
were to clear off the parapets and the _abatis_ in their front so as to
leave the space as open as possible, and be able to charge the momen