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The Office of the Secretary of Defense (OSD) is a headquarters-level staff of the
United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national sec ...
. It is the principal civilian staff element of the U.S. Secretary of Defense, and it assists the Secretary in carrying out authority, direction and control of the Department of Defense in the exercise of policy development, planning, resource management, fiscal, and program evaluation responsibilities. OSD (along with
the Joint Staff The Joint Chiefs of Staff (JCS) is the body of the most senior uniformed leaders within the United States Department of Defense, that advises the president of the United States, the secretary of defense, the Homeland Security Council and the ...
) is the Secretary of Defense's support staff for managing the Department of Defense, and it corresponds to what the Executive Office of the President of the U.S. is to the U.S. president for managing the whole of the Executive branch of the federal government. OSD includes the immediate offices of the Secretary (SECDEF) and the Deputy Secretary of Defense (DEPSECDEF), as well as the Under Secretary of Defense for Research and Engineering; Under Secretary of Defense for Acquisition and Sustainment; Under Secretary of Defense for Policy; Under Secretary of Defense (Comptroller); Under Secretary of Defense for Personnel and Readiness; and Under Secretary of Defense for Intelligence & Security. All of these positions are Presidential appointments which require U.S. Senate confirmation, as do each of their sole deputies. Other positions include the Assistant Secretaries of Defense, Assistants to the Secretary of Defense,
General Counsel A general counsel, also known as chief counsel or chief legal officer (CLO), is the chief in-house lawyer for a company or a governmental department. In a company, the person holding the position typically reports directly to the CEO, and their ...
,
Director, Operational Test and Evaluation The Director, Operational Test and Evaluation (DOT&E) is the principal staff assistant and adviser to the US Secretary of Defense on operational and live fire test and evaluation activities involving U.S. Department of Defense weapons systems. R ...
, Director of Administration and Management, and other staff offices that the Secretary establishes in order to assist in carrying out their assigned responsibilities.


Composition of OSD

The
Secretary A secretary, administrative professional, administrative assistant, executive assistant, administrative officer, administrative support specialist, clerk, military assistant, management assistant, office secretary, or personal assistant is a ...
and
Deputy Secretary Deputy or depute may refer to: * Steward (office) * Khalifa, an Arabic title that can signify "deputy" * Deputy (legislator), a legislator in many countries and regions, including: ** A member of a Chamber of Deputies, for example in Italy, Spain ...
manage several Under Secretaries each of whom in turn manage several
Assistant Secretaries of Defense Assistant Secretary of Defense is a title used for many high-level executive positions in the Office of the Secretary of Defense within the U.S. Department of Defense. The Assistant Secretary of Defense title is junior to Under Secretary of Defens ...
. There are also several special officers reporting directly to Secretary of Defense. Major elements of OSD (listed hierarchically): *
Secretary of Defense A defence minister or minister of defence is a cabinet official position in charge of a ministry of defense, which regulates the armed forces in sovereign states. The role of a defence minister varies considerably from country to country; in so ...
(SecDef) and Deputy Secretary of Defense (DepSecDef) ** Special officers reporting directly to Secretary and Deputy *** Executive Secretary of the Department of Defense (ExecSec) ***
General Counsel of the Department of Defense The General Counsel of the Department of Defense is the chief legal officer of the Department of Defense (DoD), advising both the Secretary and Deputy Secretary on all legal matters and services, and providing legal advice to Office of the Secr ...
*** Assistant to the Secretary of Defense for Intelligence Oversight (ATSD(IO)) ***
Assistant to the Secretary of Defense for Public Affairs The Assistant to the Secretary of Defense for Public Affairs, or ATSD (PA), is the principal staff advisor and assistant to the Secretary of Defense and Deputy Secretary of Defense for public information, internal information, community relations ...
(ATSD(PA)) *** Chief Information Officer (DoD CIO) *** Senior Designated Officials of SECDEF-Empowered Cross Functional Teams ** Assistant Secretaries reporting directly to Secretary and Deputy *** Assistant Secretary of Defense for Legislative Affairs (LA) ** Under Secretaries *** Under Secretary of Defense (Comptroller)/Chief Financial Officer (C/CFO) *** Under Secretary of Defense for Acquisition and Sustainment (A&S) **** Deputy Under Secretary of Defense for Acquisition and Sustainment **** Assistant Secretary of Defense for Acquisition **** Assistant Secretary of Defense for Sustainment ****
Assistant Secretary of Defense for Energy, Installations, and Environment The Assistant Secretary of Defense for Energy, Installations, and Environment (ASD(EI&E)), formerly known as the Deputy Under Secretary of Defense for Installations and Environment (DUSD(I&E)), provides management and oversight of military instal ...
**** Assistant Secretary of Defense for Nuclear, Chemical & Biological Defense Programs (NCB) *** Under Secretary of Defense for Intelligence and Security (I&S) *** Under Secretary of Defense for Personnel and Readiness (P&R) **** Deputy Under Secretary of Defense for Personnel and Readiness **** Assistant Secretary of Defense for Health Affairs (HA) ****
Assistant Secretary of Defense for Manpower and Reserve Affairs In the United States military, the ''Assistant Secretary of Defense for Manpower and Reserve Affairs'' (ASD (M&RA)), formerly Assistant Secretary of Defense for Reserve Affairs (ASD (RA)) serves as Principal Staff Assistant and advisor to the Secre ...
(M&RA) **** Assistant Secretary of Defense for Readiness **** Executive Director, Defense Human Resources Activity (DHRA) **** Executive Director, Force Resiliency **** Executive Director, Personnel and Readiness *** Under Secretary of Defense for Policy (P) **** Deputy Under Secretary of Defense for Policy **** Assistant Secretary of Defense for Indo-Pacific Security Affairs (IPSA) **** Assistant Secretary of Defense for Global Strategic Affairs (GSA) **** Assistant Secretary of Defense for Homeland Defense and Hemispheric Affairs (HD&HA) **** Assistant Secretary of Defense for International Security Affairs (ISA) **** Assistant Secretary of Defense for Special Operations and Low Intensity Conflict (SO&LIC) **** Assistant Secretary of Defense for Space Policy **** Assistant Secretary of Defense for Strategy, Plans, and Capabilities ***
Under Secretary of Defense for Research and Engineering The Under Secretary of Defense for Research and Engineering, abbreviated USD (R&E), is a senior official of the United States Department of Defense. The USD (R&E) is charged with the development and oversight of technology strategy for the DoD. ...
** Directors *** Director of Administration and Management (DA&M) ***
Director of Cost Assessment and Program Evaluation The Director of Cost Assessment and Program Evaluation (CAPE) is a principal staff assistant and advisor to the Secretary and Deputy Secretary of Defense in the Office of the Secretary of Defense. The postholder, as chartered under United States ...
(CAPE) *** Director of Family Policy *** Director of Force Transformation *** Director of Net Assessment *** Director of the Office of Corrosion Policy and Oversight ***
Director, Operational Test and Evaluation The Director, Operational Test and Evaluation (DOT&E) is the principal staff assistant and adviser to the US Secretary of Defense on operational and live fire test and evaluation activities involving U.S. Department of Defense weapons systems. R ...
(DOT&E) *** Director of Small Business Programs


Former elements

*
Assistant Secretary of Defense for Networks and Information Integration The Assistant Secretary of Defense for Networks & Information Integration (ASD(NII)) was an appointed position that provided management and oversight of all DoD information technology, including national security systems. The ASD(NII) also served as ...
(NII) * Defense Prisoner of War/Missing Personnel Office (DPMO)


Major reorganizations

The composition of OSD is in a state of consistent flux, as Congress and DoD routinely create new offices, redesignate existing ones, and abolish others.


Obama administration changes

During the Obama administration, Congress has sought to clarify the organization of OSD, and has worked with the department to move toward a standardization of official naming conventions. Many Defense officials, including the Deputy Secretary of Defense (DEPSECDEF), all five Under Secretaries of Defense (USDs), and all Assistant Secretaries of Defense (ASDs), as well as any officials specifically designated in U.S. Code have historically been considered Presidentially-Appointed, Senate-Confirmed (PAS) officials, in that the Senate must provide "advice and consent" for each individual before he or she can operate in an official capacity. In a March 2009 letter, Senator Carl Levin, Chairman of the Senate Armed Service Committee, wrote that the department was apparently exercising the authority to appoint other significant officials—termed Deputy Under Secretaries of Defense (DUSDs)—"without statutory authorization, without limitation, and without Senate confirmation." Levin was "concerned that the proliferation of DUSDs at multiple levels of the organization could muddy lines of authority and may not be in the best interest of the Department of Defense." Subsequent legislation established five Senate-confirmed Principal Deputies (i.e., "first assistants"), one for each Under Secretary of Defense. The FY10 NDAA gave the Department of Defense until January 1, 2011, to eliminate or redesignate all other Deputy Under Secretaries who are not Principal Deputy Under Secretaries of Defense (PDUSDs). The FY11 NDAA extended this deadline to January 1, 2015. During that time, the Secretary may, at his or her discretion, appoint within OSD five additional non-PAS DUSDs beyond the five statutory PAS-PDUSDs. The USD(I) appears to be maintaining at least three non-PAS DUSDs, although they have been renamed. The USD (AT&L) has maintained the non-PAS DUSD for Installations and Environment, though the FY11 NDAA recommended merging this post with the newly created ASD for Operational Energy Plans and Programs. The USD(P) has maintained a non-PAS DUSD for Strategy, Plans, and Forces, though the FY11 NDAA recommended eliminating this position. Nevertheless, a number of positions have been redesignated or eliminated during the
Obama Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, Obama was the first African-American president of the ...
administration, pursuant to statutory language contained in the National Defense Authorization Acts of FY10 and FY11. and subsequent internal DoD reports. :* Director for Defense Intelligence = DDI, DUSD = Deputy Under Secretary of Defense, ASD = Assistant Secretary of Defense, DASD = Deputy Assistant Secretary of Defense


See also

* The Air Staff * Headquarters Marine Corps *
The Joint Staff The Joint Chiefs of Staff (JCS) is the body of the most senior uniformed leaders within the United States Department of Defense, that advises the president of the United States, the secretary of defense, the Homeland Security Council and the ...
* Office of the Secretary of the Army *
Office of the Secretary of the Navy The secretary of the Navy (or SECNAV) is a statutory officer () and the head (chief executive officer) of the Department of the Navy, a military department (component organization) within the United States Department of Defense. By law, the s ...
*
Office of the Secretary of the Air Force The secretary of the Air Force, sometimes referred to as the secretary of the Department of the Air Force, (SecAF, or SAF/OS) is the head of the Department of the Air Force and the service secretary for the United States Air Force and United S ...
*
Secretary of Defense-Empowered Cross-Functional Teams Secretary of Defense-Empowered Cross-Functional Teams (SECDEF CFTs) are specialized organizations within the Department of Defense, authorized by Section 911 of the 2017 National Defense Authorization Act. The SECDEF CFTs are designed to help the De ...


References


External links


Office of the Secretary of Defense

Office of the Under Secretary of Defense for Acquisition, Technology and Logistics (AcqWeb)
{{DEFAULTSORT:Office Of The Secretary Of Defense 1947 establishments in Virginia Government agencies established in 1947 United States Department of Defense agencies