g.
Subsequently, Wilson made his march to Staunton bridge, destroying
railroads and supplies of inestimable value, and though this was
neutralized by his disaster near Ream's Station, the temporary
set-back there to one division was soon redeemed by victory over
the Confederate infantry at the battle of Darbytown.

In the campaign we were almost always on the march, night and day,
often unable to care properly for our wounded, and obliged to bury
our dead where they fell; and innumerable combats attest the part the
cavalry played in Grant's march from the Rapidan to Petersburg. In
nearly all of these our casualties were heavy, particularly so when,
as was often the case, we had to engage the Confederate infantry; but
the enemy returned such a full equivalent in dead and wounded in
every instance, that finally his mounted power, which from the
beginning of the war had been nurtured with a wise appreciation of
its value, was utterly broken.

CHAPTER XXIII.

GENERAL HUNTER'S SUCCESSFUL MARCH AND SUBSEQUENT RETREAT--GENERAL
JUBAL A. EARLY THREATENS WASHINGTON--CHAMBERSBURG, PA., BURNED
--SELECTED TO OPERATE AGAINST GENERAL EARLY--THE SHENANDOAH VALLEY
--THE CONFEDERATE ARMY.

When the attempt to take Petersburg in conjunction with the mine
explosion resulted in such a dismal failure, all the operations
contemplated in connection with that project came to a standstill,
and there was every prospect that the intensely hot and sultry
weather would prevent further activity in the Army of the Potomac
till a more propitious season. Just now, however, the conditions
existing in the Shenandoah Valley and along the upper Potomac
demanded the special attention of General Grant, for, notwithstanding
the successful march that Major-General David Hunter had made toward
Lynchburg early in the summer, what he had first gained was
subsequently lost by strategical mistakes, that culminated in
disaster during the retreat he was obliged to make from the vicinity
of Lynchburg to the Kanawha Valley. This route of march uncovered
the lower portion of the Valley of the Shenandoah, and with the
exception of a small force of Union troops under General Franz Sigel
posted aft Martinsburg for the purpose of covering the Baltimore and
Ohio railroad, there was nothing at hand to defend the lower valley.

The different bodies of Confederates which compelled Hunter's retreat
were under command of General Jubal A. Early, who had been sent to