This map traces the marches of Cornwallis (red) and his wily adversary Nathanael Greene (blue). The campaign opened at Charleston in August 1780 when Cornwallis marched north to confront Gen. Horatio Gates moving south with a Continental army. It ended at Yorktown in October 1781 with Cornwallis’s surrender of the main British army in America. In between were 18 months of some of the hardest campaigning and most savage fighting of the war. On this 14th of January, 1781, a great many people in South Carolina and North Carolina were badly in need of the reassurance that Daniel Morgan communicated. The year just completed had been a series of military and political disasters, with only a few flickering glimpses of hope for the Americans who had rebelled against George III and his Parliament in 1776. In 1780 the British had adopted a new strategy. Leaving enough troops to pin down George Washington’s main American army near New York, the British had sent another army south to besiege Charleston. On May 12, 1780, the city and its defending army, under the command of a Massachusetts general named Benjamin Lincoln, surrendered. Two hundred and forty-five regular officers and 2,326 enlisted men became captives along with an equal number of South Carolina militia; thousands of muskets, dozens of cannon, and tons of irreplaceable gunpowder and other supplies were also lost. [Illustration: Gen. Nathanael Greene (1742-86) served with distinction in two roles: as quartermaster general of the army after others had failed in the post, and as the strategist of the decisive Southern Campaign.] It was the worst American defeat of the war. The Continental Congress responded by sending south Gen. Horatio Gates, commander of the army that had beaten the British at Saratoga. Gates brought with him about 1,200 Maryland and Delaware Continentals and called on the militia of North Carolina and Virginia to support him. On August 16, 1780, outside the village of Camden, S.C., the Americans encountered an army commanded by Charles, Earl Cornwallis, the most aggressive British general in America. Cornwallis ordered a bayonet charge. The poorly armed, inexperienced militia panicked and fled. The Continentals fought desperately for a time but were soon surrounded and overwhelmed.