.

.The structures themselves at the Barracks most likely fell into ruin quickly after the war from lack of use, having been built in haste and intended only for temporary quarters. No trace of the Barracks at Winchester, Virginia remains today. 

Frederick, Maryland

The group of Yorktown prisoners that had first been sent to Winchester, Virginia had encountered conditions so bad that they were removed from that place after eleven weeks and were now on a grueling forty mile march toward Frederick, Maryland in the dead of winter, where they would be reunited with the rest of the prisoners that were already there. 

Fort Frederick History

Horatio Sharpe, governor of Maryland, commenced construction on Fort Frederick in 1756 at the outset of the French and Indian War. It was one of the largest fortifications built by English colonists in North America and construction took the better part of two years. It was a substantial stone star shaped structure with an imposing presence situated on a knoll above the Potomac River. The exterior lines were three hundred fifty five feet from bastion point to bastion point. The stone wall was eighteen feet high with at least three major buildings originally standing inside.
Over its lifetime, a number of different types of troops garrisoned Fort Frederick, but the most important group of soldiers were the four hundred fifty men of the Maryland Forces, men raised and supported by Maryland as provincial regulars. The Maryland Forces were eventually disbanded and the Fort was closed.
In 1763 Governor Sharpe reactivated the fort due to a massive Indian rebellion and seven hundred area settlers flocked to the fort for protection. Afterwards, the fort was again abandoned. 

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15 Lion G. Miles. p. 47-53.
16 Fort Frederick State Park History, http://www.dnr.state.md.us/publiclands/ftfrederickhistory.html