"The Battle of Cowpens, January 17, 1781, took place in the latter part of the Southern Campaign of the American Revolution and of the Revolution itself. It became known as the turning point of the war in the South, part of a chain of events leading to Patriot victory at Yorktown. The Cowpens victory was won over a crack British regular army and brought together strong armies and leaders who made their mark on history." From Cowpens, National Park Service.
Ground Warfare by 
Battles of the Revolutionary War, 1775-1781 by 
Battle Maps and Charts of the American Revolution by 
Battles That Changed American History by The British Defeat at Cowpens in 1781, Nifong, M. AC 001742