That was on the 15th day of June, 1775, and Washington left immediately for Boston to take command of the American forces. All along the route, the people turned out to welcome him and bid him Godspeed. Delegations escorted him from one town to the next, and at last, on the afternoon of July 2d, he rode into Cambridge, where, the next day, in the shadow of a great elm on Cambridge Common, he took command of his army, and began the six years' struggle which resulted in the establishment of the independence of the United States of America. His first task was to drive the British from Boston, and he had accomplished it by the following March. Then came a long period of reverses and disappointments, during which his little army, outnumbered, but not outgeneraled, was driven from Long Island, from New York, and finally across New Jersey, taking refuge on the south bank of the Delaware. There he gathered it together, and on Christmas night, 1776, while the enemy were feasting and celebrating in their quarters at Trenton, he ferried his army back across the ice-blocked river, fell upon the British, administered a stinging defeat, and never paused until he had driven them from New Jersey. That brilliant campaign effectually stifled the opposition which he had had to fight in the Congress, and resulted in his being given full power over the army, and over all parts of the country which the army occupied. One more terrible ordeal awaited him--the winter of 1777-1778 spent at Valley Forge, where the army, without the merest necessities of life, melted away from desertion and disease, until, at one time, it consisted of less than two thousand effective men. The next spring saw the turning-point, for France allied herself with the United States; the British were forced to evacuate Philadelphia and were driven back across New Jersey to New York; and, finally, by one of the most brilliant marches in history, Washington transferred his whole army from the Hudson to the Potomac, and trapped Cornwallis and his army of seven thousand men at Yorktown. Cornwallis tried desperately to free himself, but to no avail, and on October 19, 1781, he surrendered his entire force. There is a pretty legend that, as Cornwallis delivered up his sword, a cheer started through the American lines, but that Washington stilled it on the instant, remarking, "Let posterity cheer for us." Whether the legend be true or not, posterity _has_ cheered, for that brilliant victory really ended the war, although two years passed before peace was declared and the independence of the United States acknowledged by the King of England.