How important was George Washington to the American success in the Revolution?

George Washington played a pivotal role in the American Revolution, both as a military commander and a political leader.
As a military commander, he assumed the unenvious task of taking command of rag tag American forces during the Siege of Boston and later overseeing their organization and training into the professional Continental Army. Over the next several years, he developed and victoriously executed the overall war strategy as commanding general of American forces.
As a political leader, Washington served as an early delegate to the Continental Congress, representing Virginia. His reputation, stoicism, and imposing presence was a cornerstone of support to independence backers in Congress, such as the members of what would eventually become the Committee of Five: John Adams, Thomas Jefferson, Benjamin Franklin, Roger Sherman, and Roger Livingston.