ns of Colonel Corcoran,
we formed an irregular square against the cavalry which were then
seen to issue from the position from which we had been driven, and
we began our retreat toward the same ford of Bull Run by which we
had approached the field of battle. There was no positive order to
retreat, although for an hour it had been going on by the operation
of the men themselves. The ranks were thin and irregular, and we
found a stream of people strung from the hospital across Bull Run,
and far toward Centreville. After putting in motion the irregular
square in person, I pushed forward to find Captain Ayres's battery
at the crossing of Bull Run. I sought it at its last position,
before the brigade had crossed over, but it was not there; then
passing through the woods, where, in the morning, we had first
formed line, we approached the blacksmith's shop, but there found a
detachment of the secession cavalry and thence made a circuit,
avoiding Cub Run Bridge, into Centreville, where I found General
McDowell, and from him understood that it was his purpose to rally
the forces, and make a stand at Centreville.

But, about nine o'clock at night, I received from General Tyler, in
person, the order to continue the retreat to the Potomac. This
retreat was by night, and disorderly in the extreme. The men of
different regiments mingled together, and some reached the river at
Arlington, some at Long Bridge, and the greater part returned to
their former camp, at or near Fort Corcoran. I reached this point
at noon the next day, and found a miscellaneous crowd crossing over
the aqueduct and ferries.. Conceiving this to be demoralizing, I
at once commanded the guard to be increased, and all persons
attempting to pass over to be stopped. This soon produced its
effect; men sought their proper companies and regiments.
Comparative order was restored, and all were posted to the best
advantage.

I herewith inclose the official report of Captain Belly, commanding
officer of the New York Sixty-ninth; also, fall lists of the
killed, wounded, and missing.

Our loss was heavy, and occurred chiefly at the point near where
Rickett's battery was destroyed. Lieutenant-Colonel Haggerty was
killed about noon, before we had effected a junction with Colonel
Hunter's division. Colonel Cameron was mortally wounded leading
his regiment in the charge, and Colonel Corcoran has been missing
since the cavalry-charge near the building used as a hos