ALEXANDER MACOMG - (1782-1841) - Army Engineer, born Detroit, Mich. Entered Army as cornet (1799); curing war of 1812 commanded 3rd Regiment of Artillery at Niagra dn Ft. George. Repulsed attack of Sir George Prevost at Plattsburg (Sept. 11, 1814), receiving thanks of Congress and being promoted major-general. Was Chief Engineer (1821-1828); served for few months in Seminole War (1835). Wrote A Treatise on Martial Law and CourtsMartial as Practised in the United States (1840); also edited Samuel Cooper's Tactics and Regulations for the Militia (1836).