The leader who led the United States in the Revolutionary War was George Washington. Appointed as the Commander-in-Chief of the Continental Army, Washington played a crucial role in strategizing and executing campaigns against British forces. His leadership was instrumental in key victories, such as the Battle of Trenton and the Siege of Yorktown, which ultimately led to American independence. Washington's character, military acumen, and commitment to the cause contributed to his reputation as a national hero, and he later became the first President of the United States, setting precedents for the new nation.