U.S. Secretary of Defense.
28th United States Secretary of Defense.
January 22, 2021 to
Lloyd J. Austin III
Independent
Georgia.
27th United States Secretary of Defense.
July 23, 2019 to November 9, 2020.
Mark Esper
Republican
Virginia.
26th United States Secretary of Defense.
January 20, 2017 to January 1, 2019.
Jim Mattis
Independent
Washington.
32.1 - 811,583
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