...d Custer's brigade, which had to cross to the north side of the Potomac, at Shepardstown, and join me via Harper's Ferry. For my own part I believed Early meditated a crossing of his cavalry into Maryland , at Williamsport, and I sent Wilson's division around by Harper's Ferry to watch its movements. Averell in the mean time had taken post at Williamsport, on the north side of the Potomac, and held t...