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Whilst these movements were in progress on the west side of
Bull's Run,
General Schenck, with his brigade and
Carlisle's battery, and a part of
Ayres's, had been vainly endeavoring to turn or silence a Confederate battery opposite
Tyler's extreme right.
In this attempt the Second New York suffered severely.
In the mean time,
Keyes's brigade had followed
Sherman's across the run, eight hundred yards above the
Stone Bridge, taken a position on his left, and joined in the pursuit of the broken column of the
Confederates.
Their batteries near the bridge were soon withdrawn, and between two and three o'clock,
Captain Alexander, of the
Engineers, with a company of ax-men, proceeded to cut a passage through the abatis that obstructed the road.
By three o'clock, there
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“The portico.”
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were no impediments in the way of the advance of re-enforcements from
Centreville; for at one o'clock the
National forces had possession of the
Warrenton Turnpike from near the bridge westward, which was one of the grand objectives of the movement against the
Confederate left.
But there was a formidable obstacle in the way of the complete execution of the design.
The Confederates were on the commanding plateau, too near the turnpike and the bridge to make an attempt to strike the Manassas Gap Railway a safe operation.
To drive them from it was the task now immediately in hand.
To accomplish it, five brigades, namely,
Porter's,
Howard's,
Franklin's,
Wilcox's, and
Sherman's, with the batteries of
Ricketts,
Griffin, and
Arnold, and the cavalry under
Major Palmer, were sent along and near the
Sudley's Spring Road, to turn the
Confederate left, while
Keyes was sent to annoy them on the right.
The brigade of
Burnside, whose ammunition had been nearly exhausted in the morning battle, had withdrawn into a wood for the purpose of being supplied, and was not again in action.
Eighteen thousand Nationals were on the west side of
Bull's Run, and thirteen thousand of them were soon fighting the ten thousand Confederates on the plateau.
Up the slope south of the
Warrenton Turnpike, the five brigades, the batteries, and the cavalry moved, accompanied by
McDowell, with
Heintzelman (whose division commenced the action here) as his chief lieutenant on the field.
They were severely galled by the batteries of
Imboden,
Stanard,
Pendleton,
Alburtis of the Shenandoah Army, and portions of
Walton's and
Rogers's batteries of the Army of the Potomac.
Yet they pressed forward, with the batteries of
Ricketts and
Griffin in front, and, outflanking the
Confederates, were soon in possession of the western portion of the plateau.
There was a swell of ground westward of the
Henry