Statistics for occurrence #1 of “General McClellan” in chapter 38, page 565 of Allan Pinkerton, The spy in the rebellion; being a true history of the spy system of the United States Army during the late rebellion, revealing many secrets of the war hitherto not made public, compiled from official reports prepared for President Lincoln , General McClellan and the Provost-Marshal-General .:

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that the rebels had moved their entire army into Virginia, and it was presumed that his objective point was Baltimore. General McClellan left Washington on the 7th day of September, and established his headquarters at Rockville, having first made all arrangements for the defense of Washington, and placing General Banks in command of t...
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