Andrew Porter Place of birth Lancaster, Pennsylvania Place of death Paris, France Place of burial Elmwood Cemetery (Detroit, Michigan) Allegiance United States of America
Union Service/branch United States Army
Union Army Years of service 1836—1864 Rank Brigadier General Commands held Provost Marshal of the Army of the Potomac Battles/wars Mexican War
American Civil War
Andrew Porter (July 10, 1820 – January 3, 1872) was an American army officer who was a brigadier general in the Union Army during the American Civil War. He was an important staff officer under George B. McClellan during the 1862 Peninsula Campaign, serving as the Provost Marshal of the Army of the Potomac.Early life and career
Porter was born in Lancaster, Pennsylvania. He was a grandson of Revolutionary War Andrew Porter; son of George Bryan Porter; and a second cousin of Mary Todd Lincoln; his younger first cousin, Horace Porter, also served as a Union general. He attended the United States Military Academy at West Point, New York, for six months in 1836.
He served in the Mexican-American War as a first lieutenant in the 1st Mounted Rifles. Within a year, he was promoted to captain and cited for gallantry, being brevetted two grades to lieutenant colonel. Porter spent the next fourteen years serving at various posts and forts on the frontier. He fought a duel in Texas with future Confederate general James J. Archer, whose second was Thomas J. Jackson, later "Stonewall" Jackson. Porter married Margarite Biddle of the famous Biddle family.