And so it happened. No sooner had Halleck assumed command of all the Northern armies than the matter of McClellan’s withdrawal was agitated and on August 3d the head of the Army of the Potomac, to his bitter disappointment, was ordered to join Pope on the Rappahannock. Halleck was much concerned as to how Lee would act during the Federal evacuation of the Peninsula, uncertain whether the Confederates would attempt to crush Pope before McClellan could reënforce him, or whether McClellan would be attacked as soon as he was out of his strong entrenchments at Harrison’s Landing.
The latter of the two possibilities seemed the more probable, and Pope was therefore ordered to push his whole army toward Gordonsville, in the hope that Lee, compelled to strengthen Jackson, would be too weak to fall upon the retiring Army of the Potomac.
The Union army now occupied the great triangle formed roughly by the Rappahannock and the Rapidan rivers and the range of the Blue Ridge Mountains, with Culpeper Court House as the rallying point. Pope soon found that the capturing of New Madrid and Island No. 10 was easy in comparison with measuring swords with the Confederate generals in the East.
On August 6th Pope began his general advance upon Gordonsville. Banks already had a brigade at Culpeper Court House, and this was nearest to Jackson. The small settlement was the meeting place of four roads by means of which Pope’s army of forty-seven thousand men would be united. Jackson, informed of the advance, immediately set his three divisions in motion for Culpeper, hoping to crush Banks, hold the town, and prevent the uniting of the Army of Virginia. His progress was slow. The remainder of Banks’s corps reached Culpeper on the 8th. On the morning of the 9th Jackson finally got his troops over the Rapidan and the Robertson rivers. Two miles beyond the latter stream there rose from the plain the slope of Slaughter Mountain, whose ominous name is more often changed into Cedar. This “mountain” is an isolated foothill of the Blue Ridge, some twenty miles from the parent range, and a little north of the Rapidan. From its summit could be seen vast stretches of quiet farmlands which had borne their annual harvests since the days of the Cavaliers. Its gentle slopes were covered with forests, which merged at length into waving grain fields and pasture lands, dotted here and there with rural homes. It was here on the slope of Cedar Mountain that one of the most severe little battles of the war took place.
On the banks of Cedar Run, seven miles south of Culpeper and but one or two north of the mountain, Banks’s cavalry were waiting to oppose Jackson’s advance. Learning of this the latter halted and waited for an attack. He placed Ewell’s batteries on the slope about two hundred feet above the valley and sent General Winder to take a strong position on the left. So admirably was Jackson’s army stationed that it would have required a much larger force, approaching it from the plains, to dislodge it. And yet, General Banks made an attempt with an army scarcely one-third as large as that of Jackson.
General Pope had made glowing promises of certain success and he well knew that the whole North was eagerly watching and waiting for him to fulfil them. He must strike somewhere and do it soon—and here was his chance at Cedar Mountain. He sent Banks with nearly eight thousand men against this brilliant Southern commander with an army three times as large, holding a strong position on a mountain side.
Banks with his infantry left Culpeper Court House on the morning of August 9th and reached the Confederate stronghold in the afternoon. He approached the mountain through open fields in full range of the Confederate cannon, which presently opened with the roar of thunder. All heedless of danger the brave men ran up the slope as if to take the foe by storm, when suddenly they met a brigade of Ewell’s division face to face and a brief, deadly encounter took place. In a few minutes the Confederate right flank began to waver and would no doubt have been routed but for the timely aid of another brigade and still another that rushed down the hill and opened fire on the Federal lines which extended along the eastern bank of Cedar Run.
Meanwhile the Union batteries had been wheeled into position and their deep roar answered that of the foe on the hill. For two or three hours the battle continued with the utmost fury. The ground was strewn with dead and dying and human blood was poured out like water. But the odds were too great and at length, as the shades of evening were settling over the gory field, Banks began to withdraw the remnant of his troops. But he left two thousand of his brave lads—one fourth of his whole army—dead or dying along the hillside, while the Confederate losses were in excess of thirteen hundred.
The dead and wounded of both armies lay mingled in masses over the whole battle-field. While the fighting continued, neither side could send aid or relief to the maimed soldiers, who suffered terribly from thirst and lack of attention as the sultry day gave place to a close, oppressive night.
General Pope had remained at Culpeper, but, hearing the continuous cannonading and knowing that a sharp engagement was going on, hastened to the battle-field in the afternoon with a fresh body of troops under General Ricketts, arriving just before dark. He instantly ordered Banks to withdraw his right wing so as to make room for Ricketts; but the Confederates, victorious as they had been, refused to continue the contest against the reënforcements and withdrew to the woods up the mountain side. Heavy shelling was kept up by the hard-worked artillerymen of both armies until nearly midnight, while the Federal troops rested on their arms in line of battle. For two days the armies faced each other across the valley. Then both quietly withdrew. Pope’s first battle as leader of an Eastern army had resulted in neither victory nor defeat.