Benedict Arnold was an early hero of the Revolutionary War who later became one of the most infamous traitors in U.S. history. At the outbreak of the war, Arnold participated in the capture of the British garrison of Fort Ticonderoga in 1775. In 1776, he hindered a British invasion of New York from Lake Champlain. The following year, he played a crucial role in bringing about the surrender of British General John Burgoyne’s army at Saratoga. Yet Arnold felt that he never received the recognition he deserved. In 1779, he entered into secret negotiations with the British, agreeing to turn...