%148. The British leave Philadelphia.%--Hearing of the approach of the French fleet, Sir Henry Clinton, who in May had succeeded Howe in command, left Philadelphia and hurried to the defense of New York. Washington followed, and, coming up with the rear guard of the enemy at Monmouth in New Jersey, fought a battle (June 28, 1778), and would have gained a great victory had not the traitor, Charles Lee, been in command.[2] Without any reason he suddenly ordered a retreat, which was fortunately prevented from becoming a rout by Washington, who came on the field in time to stop it. [Footnote 2: After remaining a prisoner in the hands of the British from December, 1776, to April, 1778, Lee had been exchanged for a British officer.] After the battle the British hurried on to New York, where Washington partially surrounded them by stretching out his army from Morristown in New Jersey to West Point on the Hudson. %149. Stony Point.%--In hope of drawing Washington away from New York, Clinton in 1779 sent a marauding party to plunder and ravage the farms and towns of Connecticut. But Washington soon brought it back by dispatching Anthony Wayne to capture Stony Point, which he did (July, 1779) by one of the most brilliant assaults in military history. %150. Indian Raids.%--That nothing might be wanting to make the suffering of the patriots as severe as possible, the Indians were let loose. Led by a Tory[1] named Butler, a band of whites and Indians of the Seneca tribe of the Six Nations[2] marched from Fort Niagara to Wyoming Valley in northeastern Pennsylvania, and there perpetrated one of the most awful massacres in history. Another party, led by a son of Butler, repeated the horrors of Wyoming in Cherry Valley, N.Y. [Footnote 1: Not all the colonists desired independence. Those who remained loyal to the King were called Tories.] [Footnote 2: By this time the Five Nations had admitted the Tuscaroras to their confederacy and had thus become the Six Nations.] %151. George Rogers Clark%.--Meantime the British commander at Detroit tried hard to stir up the Indians of the West to attack the whole frontier at the same moment. Hearing of this, George Rogers Clark of Virginia marched into the enemy's country, and in two fine campaigns in 1778-1779 beat the British, and conquered the country from the Ohio to the Great Lakes and from Pennsylvania to the Mississippi. %152. Sullivan's Expedition%.--In 1779 it seemed so important to punish the Indians for the Wyoming and Cherry Valley massacres that General Sullivan with an army invaded the territory of the Six Nations, in central New York, burned some forty Indian villages, and utterly destroyed the Indian power in that state.