Washington played a leading military and political role in the American Revolution. His involvement began as early as 1767, when he first took political stands against the acts of the British Parliament. After the war broke out with the Battles of Lexington and Concord in April 1775, his role became military with his appointment as commander-in-chief of the Continental Army. He appeared before the Second Continental Congress in military uniform, signaling that he was prepared for war. Congress created the Continental Army on June 14; the next day it selected Washington as commander-in-chief. The task he took on was enormous, balancing regional demands, competition among his subordinates, morale among the rank and file, attempts by Congress to manage the army's affairs too closely, requests by state governors for support, and an endless need for resources with which to feed, clothe, equip, arm, and move the troops.
In the early years of the war Washington was often in the middle of the action, first directing the Siege of Boston to its successful conclusion, but then losing New York City and almost losing New Jersey before winning surprising and decisive victories at Trenton and Princeton at the end of the 1776 campaign season. At the end of the year in both 1775 and 1776, he had to deal with expiring enlistments, since the Congress had only authorized the army's existence for single years. With the 1777 establishment of a more permanent army structure and the introduction of three-year enlistments, Washington built a reliable stable of experienced troops, although hard currency and supplies of all types were difficult to come by. In 1777 Washington was again defeated in the defense of Philadelphia, but sent critical support to Horatio Gates that made the defeat of Burgoyne at Saratoga possible. Following a difficult winter at Valley Forge and the entry of France into the war in 1778, Washington followed the British army as it withdrew from Philadelphia back to New York, and fought an ultimately inconclusive battle at Monmouth Court House in New Jersey.
Washington's activities from late 1778 to 1780 were more diplomatic and organizational, as his army remained outside New York, watching Sir Henry Clinton's army that occupied the city. Washington strategized with the French on how best to cooperate in actions against the British, leading to ultimately unsuccessful attempts to dislodge the British from Newport, Rhode Island and Savannah, Georgia. His attention was also drawn to the frontier war, which prompted the 1779 Continental Army expedition of John Sullivan into upstate New York. When General Clinton sent the turncoat General Benedict Arnold to raid in Virginia, Washington began to detach elements of his army to face the growing threat there. The arrival of Lord Cornwallis in Virginia after campaigning in the south presented Washington with an opportunity to strike a decisive blow. Washington's army and the French army moved south to face Cornwallis, and a cooperative French navy under Admiral de HYPERLINK "http://en.wikipedia.org/wiki/Fran%C3%A7ois_Joseph_Paul_de_Grasse"Grasse successfully disrupted British attempts to control of the Chesapeake Bay, completing the entrapment of Cornwallis, who surrendered after the Siege of Yorktown in October 1781. Although Yorktown marked the end of significant hostilities in North America, the British still occupied New York and other cities, so Washington had to maintain the army in the face of a bankrupt Congress and troops that were at times