A Masterful Retreat. General George W. Morgan's 9,000 USA force occupied Cumberland Gap June 18 to Sept. 17, 1862. Cut off from supplies, Morgan began 200-mile retreat. From Manchester they moved in two columns, both seeking supplies, through here on to Proctor. Retreat from Gap to Greenup on Ohio River made in 16 days despite harassment by CSA Morgan's Raiders. Map other side. Installed in 1964.