During the War of 1812, he first served as Adjutant General of the Army and was later assigned as commander of Military District Number 2 (consisting of the states of Connecticut and Rhode Island) with his headquarters at New London, Connecticut.
During the War of 1812, he served as Adjutant General of the Army from July 6,1812 to March 12,1813. He was then assigned as commander of Military District Number 2 (consisting of the states of Connecticut and Rhode Island) with his headquarters at New London, Connecticut.