The Battle of Harlem Heights was fought during the New York and New Jersey campaign of the American Revolutionary War. The action took place on September 16, 1776, in what is now the Morningside Heights area and east into the future Harlem neighborhoods of northwestern Manhattan Island in what is now part of New York City. The Continental Army, under Commander-in-chief General George Washington, Major General Nathanael Greene, and Major General Israel Putnam, totaling around 9,000 men, held a series of high ground positions in upper Manhattan. Immediately opposite was the vanguard of the British Army totaling around 5,000 men under the command of Major General Henry Clinton.