n by way of Harper's Ferry to watch his movements from
Boonesboro', and at the same time directed Averell, who had reported
from West Virginia some days before, to take post at Williamsport and
hold the crossing there until he was driven away. I also thought it
possible that Early might cross the Potomac with his whole army, but
the doubts of a movement like this outweighed the probabilities
favoring it. Nevertheless, to meet such a contingency I arranged to
throw my army on his rear should the occasion arise, and deeming my
position at Halltown the most advantageous in which to await
developments, my infantry was retained there.

If General Early had ever intended to cross the Potomac, Torbert's
discovery of his manoeuvre put an end to his scheme of invasion, for
he well knew that and success he might derive from such a course
would depend on his moving with celerity, and keeping me in ignorance
of his march till it should be well under way; so he settled all the
present uncertainties by retiring with all his troops about
Kerneysville to his old position at Bunker Hill behind the Opequon,
and on the night of the 26th silently withdrew Anderson and
McCausland from my front at Halltown to Stephenson's depot.

By the 27th all of Early's infantry was in position at Brucetown and
Bunker Hill, his cavalry holding the outposts of Leetown and
Smithfield, and on that day Merritt's division attacked the enemy's
horse at Leetown, and pressed it back through Smithfield to the west
side of the Opequon. This reconnoissance determined definitely that
Early had abandoned the projected movement into Maryland, if he ever
seriously contemplated it; and I marched my infantry out from
Halltown to the front of Charlestown, with the intention of occupying
a line between Clifton and Berryville the moment matters should so
shape themselves that I could do so with advantage. The night of the
28th Wilson joined me near Charlestown from his points of observation
in Maryland, and the next day Averell crossed the Potomac at
Williamsport and advanced to Martinsburg.

Merritt's possession of Smithfield bridge made Early somewhat uneasy,
since it afforded opportunity for interposing a column between his
right and left flanks, so he concluded to retake the crossing, and,
to this end, on the 29th advanced two divisions of infantry. A
severe fight followed, and Merritt was forced to retire, being driven
through the village toward Charlestown with