now occurred; so
on the 28th of November, I directed General Merritt to march to the
Loudoun Valley and operate against Mosby, taking care to clear the
country of forage and subsistence, so as to prevent the guerrillas from
being harbored there in the future their destruction or capture being
well-nigh impossible, on account of their intimate knowledge of the
mountain region. Merritt carried out his instructions with his usual
sagacity and thoroughness, sweeping widely over each side of his
general line of march with flankers, who burned the grain and brought
in large herds of cattle, hogs and sheep, which were issued to the
troops.

While Merritt was engaged in this service the Baltimore and Ohio
railroad once more received the attention of the enemy; Rosser, with
two brigades of cavalry, crossing the Great North Mountain, capturing
the post of New Creek, with about five hundred prisoners and seven
guns, destroying all the supplies of the garrison, and breaking up
the railroad track. This slight success of the Confederates in West
Virginia, and the intelligence that they were contemplating further
raids in that section, led me to send, Crook there with one division,
his other troops going to City Point; and, I hoped that all the
threatened places would thus be sufficiently protected, but
negligence at Beverly resulted in the capture of that station by
Rosser on the 11th of January.

In the meanwhile, Early established himself with Wharton's division
at Staunton in winter quarters, posting his cavalry in that
neighborhood also, except a detachment at New Market, and another
small one at the signal-station on Three Top Mountain. The winter was
a most severe one, snow falling frequently to the depth of several
inches, and the mercury often sinking below zero. The rigor of the
season was very much against the success of any mounted operations,
but General Grant being very desirous to have the railroads broken up
about Gordonsville and Charlottesville, on the 19th of December I
started the cavalry out for that purpose, Torbert, with Merritt and
Powell, marching through Chester Gap, while Custer moved toward
Staunton to make a demonstration in Torbert's favor, hoping to hold
the enemy's troops in the valley. Unfortunately, Custer did not
accomplish all that was expected of him, and being surprised by
Rosser and Payne near Lacy's Springs before reveille, had to abandon
his bivouac and retreat down the valley, with th