Revolutionary War Continental Army Officer. He enlisted on January 13, 1776 and served throughout the Revolutionary War. He was an adjutant under Colonel James Ford, Jr. in the Eastern Battalion of the Morris County (New Jersey) Militia in 1776; and also served as a Captain of artillery. He took part in the First and Second Battles of Trenton and the Battle of Princeton. In 1777 he was promoted to Captain of the Second Regiment of the Continental Corps of Artillery, where he served throughout the war. He commanded the only organized Army unit after the Continental Army was demobilized after the Revolutionary War, thus in effect making him the 3rd Commander of the United States Army.