Statistics for occurrence #1 of “Loudoun county” in chapter 12.89 of Southern Historical Society Papers, Volume 7.:

... the Peninsula and every where since. On the 3d of November, twenty days after he had bees ordered, McClellan finished crossing his army over the Potomac — not in General Lee's front, but in Loudoun county --carefully interposing the burly Blue Ridge between it and the Army of Northern Virginia, and securely holding the passes. Leaving Jackson in the lower Valley, General Lee quietly moved Longstreet ...
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