Congress created the Continental Army on June 14, 1775, and Samuel and John Adams nominated Washington to become its commander in chief. Washington was chosen over John Hancock because of his military experience and the belief that a Virginian would better unite the colonies. He was considered an incisive leader who kept his "ambition in check". He was unanimously elected commander in chief by Congress the next day.
He was commissioned on June 19 and was roundly praised by Congressional delegates, including John Adams, who proclaimed that he was the man best suited to lead and unite the colonies.
In June 1775, Congress ordered an invasion of Canada. It was led by Benedict Arnold, who, despite Washington's strong objection, drew volunteers from the latter's force during the Siege of Boston. The move on Quebec failed, with the American forces being reduced to less than half and forced to retreat.