Alongside Washington’s main army after New York City fell, one of Hamilton’s brightest moments was during the two weeks of the Trenton-Princeton campaign, where he played Captain in the artillery. This pivotal role of coordinating and strategizing allowed the Continental Army to cross the Delaware river. Following this, Colonel Knox and Major Greene, who were impressed by Hamilton’s good work, recommended him to Officer Washington for personal attention. In March 1777, Hamilton was appointed an aide to the Commander and Chief and promoted to lieutenant colonel. In addition to these promotions, Hamilton was handpicked, along with a group of young men, to be a part of George Washington’s “family” staff at the center of his military administration. This staff was assigned the duties of being messengers and preparing Washington’s official correspondence. Hamilton quickly proved he belonged as he climbed up the ladder and was a key staff member. Hamilton also married in the winter of 1780. He married Elizabeth Schuyler, daughter of Continental Army Major General, Senator, and one of George Washington's closest supporters, Philp