List of US Secretaries of Defense

James V. Forrestal

Louis A. Johnson

George C. Marshall

Robert A. Lovett

Charles E. Wilson

Neil H. McElroy

Thomas S. Gates, Jr.

Robert S. McNamara

Clark M. Clifford

Melvin R. Laird

Elliot L. Richardson

James R. Schlesinger

Donald H. Rumsfeld

Harold Brown

Caspar W. Weinberger

Frank C. Carlucci

Richard B. Cheney

Leslie Aspin

William J. Perry

William S. Cohen

Donald H. Rumsfeld

Robert M. Gates

Leon E. Panetta

Chuck Hagel

Ashton B. Carter

James N. Mattis

Mark T. Esper

Lloyd Austin