During the American Revolutionary War, Hutchinson worked as a surgeon for both the army and the navy, but his service and his passionate support of the American cause were at odds with the pacifist principles of his Quaker upbringing. He was disowned by the Society of Friends in 1779. His support of American independence drove him to politics, first as an elected official in the state assembly and later as a vocal agitator and founder of the Pennsylvania Democratic Society. An ideological anti-Federalist and supporter of Thomas Jefferson, he made public calls for American governmental support for the French Revolution. In August 1793, Hutchinson fell ill while treating patients during the outbreak of yellow fever in Philadelphia, and died a week later.[4]