Benedict Arnold had served in the disastrous Quebec Expedition in 1775. Despite a distinguished record, Arnold was embittered by Congress’s unwillingness to reward his military genius. He joined hands with Clinton to betray West Point, a plot that nearly worked until Clinton’s adjutant general, Major John Andre, was captured by the Continental Army. Arnold escaped to New York City, where he completed his turn of coat by commanding a British raid on the Chesapeake at the end of 1780.