Under Special Order 191, Maj. Gen Thomas J. Jackson led Confederate troops from Frederick to capture Harper's Ferry. On Sept. 11, 1862, Jackson's Second Corps moved by this road from its encampment near Boonsborough to cross the Potomac at Williamsport.

Marker is at the intersection of Old National Pike (Alternate U.S. 40) and Lappans Road (Maryland Route 68), on the left when traveling west on Old National Pike.

Courtesy hmdb.org

Credits and Sources: