John Glover was a Colonel, and later General, in the Continental Army during the American Revolution. Colonel Glover played an important role in the 1776 invasion by the British in New York City. During the attack, British and Hessian hired forces outnumbered the American soldiers 31,625 to 19,000. After several skirmishes in Brooklyn Heights, George Washington was forced to retreat his army across the East River to Manhattan. During the retreat, General Sir William Howe, who led the British Army during the invasion, tried to cut the American army before the evacuation was complete. However, Colonel Glover set up a defense in Pell's Point to guard Washington's retreat. Eventually, Glover was forced to give up his position, but not before Washington moved his troops to White Plains. Without the efforts of Glover and his men, the Continental Army would have surely been crushed.
Controversy surrounds Glover's Rock because it is not the actual location where the fighting took place. The location of the battle was mistaken for the longest because of a map published by Claude J. Sauthier in 1777 that was not accurate. The map was used by William Abbatt in 1901 when he determined the location of the battle, which was later marked to honor the site. However, scholars later determined, particularly after gaining access to a more accurate map by Charles Blaskowitz, that the battle actually occurred north of the location determined by Abbatt.