Under Secretary of Defense For Policy - Principal Deputy

Principal Deputy

The Principal Deputy Under Secretary of Defense for Policy is the chief staff assistant to the USD(P). Originally established as the Deputy Under Secretary of Defense (Policy) by the National Defense Authorization Act for FY 1992-93 (P.L. 102-190), the post was re-designated Principal Deputy Under Secretary of Defense (Policy), or PDUSD(P) in December 1999 by DoD Directive 5111.3. The PDUSD(P) provides advice and assistance to the Secretary of Defense, Deputy Secretary of Defense, and USD(P) on national security policy, military strategy, and defense policy.

Principal Deputy Under Secretaries of Defense for Policy
Name Tenure USD(P) Served Under SecDef(s) Served Under President(s) Served Under
I. Lewis Libby August 12, 1992 - January 10, 1993 Paul Wolfowitz Richard B. Cheney George H.W. Bush
Walter B. Slocombe June 1, 1993 - September 14, 1994 Frank G. Wisner Leslie Aspin, Jr.
William J. Perry		 Bill Clinton
Jan M. Lodal October 3, 1994 - September 30, 1998 Walter B. Slocombe William J. Perry
William S. Cohen		 Bill Clinton
James M. Bodner October 1, 1998 - January 19, 2001 Walter B. Slocombe William S. Cohen Bill Clinton
Stephen A. Cambone July 25, 2001 - July 1, 2002 Douglas Feith Donald H. Rumsfeld George W. Bush
Christopher "Ryan" Henry February 7, 2003 - August 2008 Douglas Feith
Eric S. Edelman		 Donald H. Rumsfeld
Robert M. Gates		 George W. Bush
James N. Miller April 2, 2009 - February 18, 2012 Michele Flournoy Robert M. Gates Barack Obama

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