The first US Secretary of Defense was James Vincent Forrestal. He served the office from September 17, 1947 until March 28, 1949.
Richard Nixon had three Defense Secretaries: Melvin R. Laird, Elliot Richardson, and James Schlesinger.
Richard Nixon's Secretary of Defense was Robert S. McNamara.
Caspar Weinburger for the first seven years; Frank Charles Carlucci III for the last year .
CLARK M CLIFFORD took over when ROBERT McNAMARA RESIGNED to become president of world bank
Robert Strange McNamara
McNamara.
Edwin M. Stanton was the Secretary of War under Lincoln that Johnson removed from office.
Medicare and Medicaid began in 1965 under President Lyndon Johnson.
From 1966-1968, Robert C. Weaver served as the US Secretary of Housing and Urban Development, under President Lyndon B. Johnson.
Andrew Johnson's secretary of state was William H. Seward. Seward served as secretary of state under both Johnson's predecessor, Abraham Lincoln, as well as during Johnson's presidency from 1865 to 1869.
Johnson tried to remove war secretary from office but he refused it. The secretary was known as Edwin Stanton and has also served as the war secretary under Lincoln's regime.
Johnson was vice-president under Lincoln. After Lincoln was killed, Johnson became president.
Robert Strange McNamara was the Defense Secretary of the United States from 196 until 1968. he served under both John F. Kennedy and Lyndon B. Johnson.
Grant held only one elected office and that was President of the United States.He served as interim Secretary of War for a year under President Johnson.
Albert Gallatin was President Jefferson's Secretary of the Treasury.
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Jefferson Davis was the secretary of defence for the United States under President Pierce. The office was then called the secretary of war. He was also a senator from Mississippi.