troops of the Enemy had attained a higher degree of
discipline than our own, but they acted on the defensive, and were
not equally exposed to disorganization."]

While the divisions of Hunter and Heintzelman, which came down in the
morning across Sudley Ford, are now, with one brigade (Sherman's) of
Tyler's Division, retiring again, in this disordered condition, by that
ford; two other brigades of Tyler's Division, viz., that of Schenck
--which, at 4 o'clock, was just in the act of advancing upon, and across,
the Stone Bridge, to join in the Union attack, and of Keyes, which was,
at the same time, just succeeding in its effort to turn the right flank
of the Enemy's third new line,--are withdrawing from the field, across
Bull Run stream, by the Warrenton Pike, and other roads leading them
directly toward Centreville. The brigades of both Keyes and Schenck are
retiring in good order; that of Keyes, at "an ordinary pace," following
close after McDowell, who, with his staff, has ridden across the
battlefield and Bull Run; while part of that of Schenck, united with the
2nd Maine (of Keyes' Brigade) and Ayres's Battery, "promptly and
effectively" repulses a charge of the Enemy's Cavalry, and covers the
rear of Tyler's Division. Both of these brigades reach Centreville,
hungry and weary, but otherwise, for the most part, in good shape.

But during this grand all-day attack, by two of McDowell's divisions,
directly aided by part of a third, upon the left of the Enemy's original
Bull Run line of defense--which attack, while it has failed in its
purpose, has also utterly upset and defeated the Enemy's purpose to
carry out Beauregard's plan of attacking Centreville that same morning
--what has the Left Wing of McDowell's Army been doing? Let us go back
to Sunday morning, and ascertain:

All the Army of McDowell, save his Left Wing--which, comprising the two
brigades (Blenker's and Davies's) of Miles's Division, and Richardson's
Brigade of Tyler's Division that fought the preliminary battle of
Blackburn's Ford, is now under the command of Miles,--moved away from
Centreville, down the Warrenton Pike, as we have seen, very early in the
morning.

Blenker remains with his brigade as a reserve, on the heights a little
East of Centreville, to throw up intrenchments; which, however, he does
not do, for lack of trenching implements. Richardson and Davies are to
make a feint, at Blackburn's Ford, so as to draw the Enemy's t