With the onset of the War of 1812, Armstrong received a commission as brigadier general in the U.S. Army, marking his first stay with the Army since his service as aide-de-camp to General Horatio Gates during the Revolutionary War. Armstrong accepted an appointment from President James Madison to become secretary of war in 1813. However, many observers blamed Armstrong for the Army's early failures in the war, practically forcing him to retire in 1814 after only one year of service. DS, one page, 7.75 x 3, February 1, 1813. Pay order for $19.37 issued by General Amrstrong for postage on public letters, signed at the bottom in black ink by Armstrong, noting that it is for postage for public letters. Document is affixed to a larger receipt for the postage. In very good condition, with scattered toning and soiling, partial fold separations and a bold signature. R&R COA.
