Question: Margaret "Peggy" Shippen, was the second wife of which general during the American Revolutionary War, who fought for the American Continental Army, and later defected to the British Army?
Sentence (from "Benedict Arnold"): While a general on the American side, he obtained command of the fortifications at West Point, New York (which after 1802 would become the site of the U.S. Military Academy), overlooking the cliffs at the Hudson River (upriver from British-occupied New York City), and planned to surrender them to British forces.
Relevant evidence: No