Henry Carbery, first adjutant general of Maryland, was born at St. Clement's Bay, St. Mary's county, Md., in 1757. At the commencement of the Revolutionary War in 1776, he was a "gentleman cadet" in Captain John Allen Thomas' "Independent" Company, of St. Mary's county and is mentioned in a letter from Captain Thomas to the Council of Safety, dated March 8, 1776, as "deserving notice." Carbery was appointed second lieutenant in Colonel Hartley's regiment of Continental Troops, January 24, 1777. He was promoted to first lieutenant on or about September 19, 1777, and captain on November 30, 1778. (The regiment was designated as the 11th Pennsylvania on January 13, 1779). He was wounded on August 13, 1779, and retired January 17, 1781. He was a captain in Major Henry Gaither's battalion of the "Levies of 1791," and he served under General St. Clair against the Miami Indians in November, 1791. Carbery became captain of infantry, U.S. Army, on March 16, 1792, and was assigned to the 4th sub-legion September 4, 1792. He resigned February 10, 1794.