George Washington's legacy from the period before he became president includes his military service and leadership during the American Revolutionary War. Washington played a key role in the Continental Army's victory over the British, and he is often referred to as the "Father of His Country" for his contributions to the founding of the United States. Washington also served as the President of the Constitutional Convention, where he helped shape the U.S. Constitution and the country's system of government. His leadership and military prowess during the Revolutionary War, as well as his role in the creation of the Constitution, have had a lasting impact on the United States and have solidified his place in history as one of the country's most important figures.