12th Corps, Gen. Slocum . . { Williams, } 13,450
{ Geary, }

{ Pleasonton, }
Cavalry Corps, Gen. Stoneman. { Gregg, } 11,541
{ Averell, }
{ Buford, Reserve Brigade,}

Artillery, Gen. Hunt, about 400 guns. Artillery reserve 1,610
-------
Total . . . . . . . . . 131,491




IV.

THE ARMY OF NORTHERN VIRGINIA.


While the Army of the Potomac lay about Falmouth, awaiting orders to
move, Lee occupied the heights south of the Rappahannock, from Banks's
Ford above, to Port Royal (or Skenker's Neck) below Fredericksburg,
a line some fifteen miles in length as the crow flies. The crests of
the hills on which lay the Army of Northern Virginia were from
three-quarters of a mile to a mile and a half back from, and
substantially parallel to, the river. Rifle-pits commanded every
available crossing, which, being few and difficult, were easily guarded.
Continuous lines of infantry parapets, broken by battery epaulements
located for sweeping the wide approaches from the river, extended the