In 1763, Dr. Johnson was succeeded in the presidency by Myles Cooper, a graduate of The Queen's College, Oxford, and an ardent Tory. In the charged political climate of the American Revolution, his chief opponent in discussions at the college was an undergraduate of the class of 1777, Alexander Hamilton. The Irish anatomist, Samuel Clossy, was appointed professor of natural philosophy in October 1765 and later the college's first professor of anatomy in 1767. The American Revolutionary War broke out in 1776, and was catastrophic for the operation of King's College, which suspended instruction for eight years beginning in 1776 with the arrival of the Continental Army. The suspension continued through the military occupation of New York City by British troops until their departure in 1783. The college's library was looted and its sole building requisitioned for use as a military hospital first by American and then British forces. Loyalists were forced to abandon their King's College in New York, but some led by Bishop Charles Inglis fled to Windsor, Nova Scotia, where they founded King's Collegiate School.