arper's
Ferry, but were promptly shelled out by our batteries on Maryland
Heights.

Lee having failed, on account of the discomfiture of his cavalry,
in crossing the Potomac at Edwards' Ferry, was forced either to
remain where he was or go forward. Impelled by public opinion he
kept on his way up the Cumberland Valley. Hooker being very desirous
of keeping the invasion west of the Blue Ridge, asked Heintzelman
to co-operate with him by sending the 2,000 men which seemed to be
of no service at Poolesville to the passes of South Mountain, which
is an extension of the same range; but Heintzelman said those passes
were outside of his jurisdiction, and the men were needed in
Poolesville. Hooker replied somewhat angrily that he would try
and do without the men. The two generals had quarreled, and there
was not the best feeling between them.

All of Ewell's corps were across the river on the 22d, and Jenkins'
cavalry pushed on to Chambersburg. He was ordered to remain there
until reinforced, but failed to do so, as Union troops were
approaching from the direction of Carlisle.

Longstreet and Hill were left behind to prevent Hooker from striking
the rear of this long column. Hooker still remained quiescent,
engaged in trying to obtain 15,000 men as reinforcements. He was
but partially successful, for as soon as the New York regiments
reached Baltimore, Lockwood's brigade of Maryland troops, about
three thousand, was ordered to join the Army of the Potomac, and
was assigned to the Twelfth Corps.

The Army of the Potomac at this time was posted as follows: The
Twelfth Corps at Leesburg, supported by the Eleventh on Goose Creek,
between Leesburg and Aldie; the Fifth Corps near Aldie, and the
Second at the next pass below, both supported by the Third Corps
at Gum Springs. The First Corps was behind the Eleventh and Twelfth
Corps, near Guilford, on the Loudon and Hampshire Railroad. Our
cavalry, which had left Aldie, covered the approaches to Leesburg.
On the 23d they had a sharp engagement at Dover, on the road from
Aldie to Leesburg, with part of Stuart's force, who beat up their
quarters, but they drove off their assailants without much
difficulty.

Lee now, with a prudent regard to a possible defeat, requested the
authorities at Richmond to have a reserve army under Beauregard
assemble at Culpeper; a request which was looked upon by Davis as
one quite impossible to carry out, owing to the scarcity of troops,
a