アメリカ合衆国陸軍長官
John Otho Marsh Jr. (August 7, 1926 – February 4, 2019) was an American politician and an adjunct professor at George Mason University School of Law. He served as the United States Secretary of the Army from 1981 to 1989, and as a member of the United States House of Representatives from Virginia from 1963 to 1971.