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Causes of Lee's Defeat at Gettysburg.
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ding all consideration of the troops at Harper's Ferry, although General Meade, on assuming command, at once ordered General French to move to Frederick with seven thousand men, to protect his communications, and thus made available a like number of men of the Army of the Potomac, who would otherwise have been detached for this service.
On the side of the Confederates, the entire cavalry corps is included. That portion which General Stuart accompanied made a complete circuit of the Federal army, and only joined General Lee on the evening of the second day; and the brigades under Generals Jones and Robertson, which had been left to guard the passes of the Blue Ridge, did not rejoin the army until the third of July.
