Statistics for occurrence #1 of “The Potomac” in chapter 1.33 of Jefferson Davis, The Rise and Fall of the Confederate Government:

...en joined by Breckinridge and by Colonel Bradley T. Johnson, with a battalion of Maryland cavalry. The advance was rapid. Railroad bridges were burned, the track destroyed, and stores captured. The Potomac was crossed on June 5th and 6th, and the move was made through the gaps of South Mountain to the north of Maryland Heights, which were occupied by a hostile force. A brigade of cavalry was sent nor...
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