United States Secretary of Defense

United States Secretary of Defense
United States Secretary of Defense
	Seal of the department[1]
	Flag of the secretary[2]
	Incumbent; Lloyd Austin; since January 22, 2021
	United States Department of Defense; Office of the Secretary of Defense
Style	Mr. Secretary (informal); The Honorable (formal)
Abbreviation	SecDef
Member of	Cabinet; National Security Council
Reports to	President of the United States
Seat	The Pentagon, Arlington County, Virginia
Appointer	The President; with Senate advice and consent
Term length	No fixed term
Constituting instrument	10 U.S.C. § 113
Precursor	Secretary of War; Secretary of the Navy
Formation	September 17, 1947
First holder	James Forrestal
Succession	Sixth[3]
Deputy	Deputy Secretary of Defense
Salary	Executive Schedule, level I[4]
Website	defense.gov

The United States secretary of defense (SecDef) is the head of the United States Department of Defense, the executive department of the U.S. Armed Forces, and is a high-ranking member of the federal cabinet.[5][6][7] The secretary of defense's position of command and authority over the military is second only to that of the president of the United States, who is the commander-in-chief. This position corresponds to what is generally known as a defense minister in many other countries.[8] The secretary of defense is appointed by the president with the advice and consent of the Senate, and is by custom a member of the Cabinet and by law a member of the National Security Council.[9]

The secretary of defense is a statutory office, and the general provision in 10 U.S.C. § 113 provides that, "subject to the direction of the President," its occupant has "authority, direction, and control over the Department of Defense." The same statute further designates the secretary as "the principal assistant to the President in all matters relating to the Department of Defense."[10] To ensure civilian control of the military, no one may be appointed as the secretary of defense within seven years of serving as a commissioned officer of a regular military component (i.e., non-reserve) without a waiver from Congress.[11]

Subject only to the orders of the president, the secretary of defense is in the chain of command and exercises command and control, for both operational and administrative purposes, over all service branches administered by the Department of Defense – the Army, Marine Corps, Navy, Air Force, and Space Force – as well as the Coast Guard when its command and control is transferred to the Department of Defense.[12][13][14][15][16] Only the secretary of defense (or the president or Congress) can authorize the transfer of operational control of forces between the three military departments (Department of the Army, the Navy, and the Air Force) and the eleven Unified Combatant Commands.[12] Because the secretary of defense is vested with legal powers that exceed those of any commissioned officer, and is second only to the president in the military hierarchy, its incumbent has sometimes unofficially been referred to as "deputy commander-in-chief".[17][18][19] The chairman of the Joint Chiefs of Staff is the principal military adviser to the secretary of defense and the president; while the chairman may assist the secretary and president in their command functions, the chairman is not in the chain of command.[20]

The secretary of state, the secretary of the treasury, the secretary of defense, and the attorney general are generally regarded as the four most important (and are officially the four most senior and oldest) cabinet officials because of the size and importance of their respective departments.[21]

The current secretary of defense is retired general Lloyd Austin, who is the first African-American to serve in the position.[22]

History

Seal of the National Military Establishment (1947–1949)

An Army, Navy, and Marine Corps were established in 1775, in concurrence with the American Revolution. The War Department, headed by the secretary of war, was created by Act of Congress in 1789 and was responsible for both the Army and Navy until the founding of a separate Department of the Navy in 1798.

Donald Rumsfeld is sworn in as Secretary of Defense by Associate Supreme Court Justice Potter Stewart as U.S. President Gerald R. Ford and Chairman of The Joint Chiefs of Staff General George S. Brown watch at The Pentagon on November 20, 1975.

Based on the experiences of World War II, proposals were soon made on how to more effectively manage the large combined military establishment. The Army generally favored centralization while the Navy had institutional preferences for decentralization and the status quo. The resulting National Security Act of 1947 was largely a compromise between these divergent viewpoints. It renamed the Department of War the Department of the Army, and added both it and the Department of the Navy to a newly established National Military Establishment (NME). The Act also separated the Army Air Forces from the Army to become its own branch of service, the United States Air Force.

A new title was coined by the Act for the head of the NME: Secretary of Defense. At first, each of the service secretaries maintained cabinet status. The first secretary of defense, James Forrestal, who in his previous capacity as the secretary of the Navy had opposed the creation of the new position, found it difficult to exercise authority over the other branches with the limited powers his office had at the time. To address this and other problems, the National Security Act was amended in 1949 to further consolidate the national defense structure in order to reduce interservice rivalry, directly subordinate the secretaries of the Army, the Navy and the Air Force to the secretary of defense in the chain of command, and rename the National Military Establishment as the Department of Defense, making it one Executive Department. The position of the deputy secretary of defense, the number two position in the department, was also created at this time.

The general trend since 1949 has been to further centralize management in the Department of Defense, elevating the status and authorities of civilian OSD appointees and defense-wide organizations at the expense of the military departments and the services within them. The last major revision of the statutory framework concerning the position was done in the Goldwater–Nichols Department of Defense Reorganization Act of 1986. In particular, it elevated the status of joint service for commissioned officers, making it in practice a requirement before appointments to general officer and flag officer grades could be made.

As the secretary of defense is a civilian position intended to be independent of the active-duty leadership, a secretary is required to have been retired from service for at least seven (originally ten) years unless a waiver is approved by Congress.[23] Since the creation of the position in 1947, such a waiver has been approved only three times, for Army general George Marshall in 1950, Marine Corps General Jim Mattis in 2017, and retired Army general Lloyd J. Austin III in 2021.[24][25]

Powers and functions

Department of Defense organizational chart (December 2013)

The secretary of defense, appointed by the president with the advice and consent of the Senate, is by federal law (10 U.S.C. § 113) the head of the Department of Defense, "the principal assistant to the President in all matters relating to Department of Defense", and has "authority, direction and control over the Department of Defense". Because the Constitution vests all military authority in Congress and the president, the statutory authority of the secretary of defense is derived from their constitutional authorities. Since it is impractical for either Congress or the president to participate in every piece of Department of Defense affairs, the secretary of defense and the secretary's subordinate officials generally exercise military authority.

As the head of DoD, all officials, employees and service members are "under" the secretary of defense. Some of those high-ranking officials, civil and military (outside of OSD and the Joint Staff) are: the secretary of the Army, secretary of the Navy, and secretary of the Air Force, Army chief of staff, commandant of the Marine Corps, chief of naval operations, Air Force chief of staff, chief of space operations, and chief of the National Guard Bureau and the combatant commanders of the Combatant Commands. All these high-ranking positions, civil and military, require Senate confirmation.

The Department of Defense is composed of the Office of the Secretary of Defense (OSD), the Joint Chiefs of Staff (JCS) and the Joint Staff (JS), Office of the Inspector General (DODIG), the Combatant Commands, the Military Departments (Department of the Army (DA), Department of the Navy (DON) & Department of the Air Force (DAF)), the Defense Agencies and DoD Field Activities, the National Guard Bureau (NGB), and such other offices, agencies, activities, organizations, and commands established or designated by law, or by the president or by the secretary of defense.

Department of Defense Directive 5100.01 describes the organizational relationships within the department and is the foundational issuance for delineating the major functions of the department. The latest version, signed by former secretary of defense Robert Gates in December 2010, is the first major re-write since 1987.[26][27]

Office of the Secretary of Defense

The secretary's principally civilian staff element is called the Office of the Secretary of Defense (OSD) and is composed of the deputy secretary of defense (DEPSECDEF) and five under secretaries of defense in the fields of acquisition & sustainment, research & engineering, comptroller/chief financial officer, intelligence, personnel & readiness, and policy; several assistant secretaries of defense; other directors and the staffs under them.

The name of the principally military staff organization, organized under the chairman of the Joint Chiefs of Staff, is the Joint Staff (JS).

Awards and decorations

The Defense Distinguished Service Medal (DDSM), the Defense Superior Service Medal (DSSM), the Defense Meritorious Service Medal (DMSM), the Joint Service Commendation Medal (JSCM) and the Joint Service Achievement Medal (JSAM) are awarded, to military personnel for service in joint duty assignments, in the name of the secretary of defense. In addition, there is the Joint Meritorious Unit Award (JMUA), which is the only ribbon (as in non-medal) and unit award issued to joint DoD activities, also issued in the name of the secretary of defense.

The DDSM is analogous to the distinguished services medals issued by the military departments (i.e. Army Distinguished Service Medal, Navy Distinguished Service Medal & Air Force Distinguished Service Medal), the DSSM corresponds to the Legion of Merit, the DMSM to the Meritorious Service Medal, the JSCM to the service commendation medals, and the JSAM to the achievement medals issued by the services. While the approval authority for DSSM, DMSM, JSCM, JSAM and JMUA is delegated to inferior DoD officials: the DDSM can be awarded only by the secretary of defense.

Recommendations for the Medal of Honor (MOH), formally endorsed in writing by the secretary of the military department concerned and the chairman of the Joint Chiefs of Staff, are processed through the under secretary of defense for personnel and readiness, and such recommendations be must approved by the secretary of defense before it can be handed over to the president, who is the final approval authority for the MOH, although it is awarded in the name of Congress.

The secretary of defense, with the concurrence of the secretary of state, is the approval authority for the acceptance and wear of NATO medals issued by the secretary general of NATO and offered to the U.S. permanent representative to NATO in recognition of U.S. servicemembers who meet the eligibility criteria specified by NATO.[28]

Congressional committees

As the head of the department, the secretary of defense is the chief witness for the congressional committees with oversight responsibilities over the Department of Defense. The most important committees, with respect to the entire department, are the two authorizing committees, the Senate Armed Services Committee (SASC) and the House Armed Services Committee (HASC), and the two appropriations committees, the Senate Appropriations Committee and the House Appropriations Committee.

For the DoD intelligence programs the Senate Select Committee on Intelligence and the House Permanent Select Committee on Intelligence have the principal oversight role.

National Security Council

The secretary of defense is a statutory member of the National Security Council.[29] As one of the principals, the secretary along with the vice president, secretary of state and the assistant to the president for national security affairs participates in biweekly Principals Committee (PC) meetings, preparing and coordinating issues before they are brought before full NSC sessions chaired by the president.

Role in the military justice system

The secretary is one of only five or six civilians – the others being the president, the three "service secretaries" (the secretary of the Army, secretary of the Navy, and secretary of the Air Force), and the secretary of homeland security (when the United States Coast Guard is under the United States Department of Homeland Security and has not been transferred to the Department of the Navy under the Department of Defense) – authorized to act as convening authority in the military justice system for General Courts-Martial (10 U.S.C. § 822: article 22, UCMJ), Special Courts-Martial (10 U.S.C. § 823: article 23, UCMJ), and Summary Courts-Martial (10 U.S.C. § 824: article 24 UCMJ).

Salary

Secretary of Defense is a Level I position in the Executive Schedule,[4] thus earning a salary of US$221,400, as of January 2021.[30]

List of secretaries of defense

The longest-serving secretary of defense is Robert McNamara, who served for a total of 7 years, 39 days. Combining his two non-sequential services as the secretary of defense, the second-longest serving is Donald Rumsfeld, who served just ten days fewer than McNamara. The second-longest unbroken tenure was Caspar Weinberger's, at 6 years, 306 days.

The shortest-serving secretary of defense is Elliot Richardson, who served 114 days and then was appointed U.S. attorney general amid the resignations of the Watergate Scandal. (This is not counting deputy secretaries of defense William P. Clements and William Howard Taft IV, who each served a few weeks as temporary/acting secretary of defense).

For precursors to this position prior to the establishment of the Department of Defense, see the lists of secretaries of the Navy and secretaries of war prior to 1947.

Parties

Democratic Republican Independent / Unknown

Status

Denotes an Acting Secretary of Defense

No.	Secretary of Defense	Took office	Left office	Time in office	Party	State of residence	President serving under	Ref.
1	Forrestal, JamesJames Forrestal (1892–1949)	September 17, 1947	March 28, 1949	1 year, 192 days	Democratic	New York	Truman, HarryHarry S Truman (D)	[31]
2	Johnson, LouisLouis A. Johnson (1891–1966)	March 28, 1949	September 19, 1950	1 year, 175 days	Democratic	West Virginia	Truman, HarryHarry S Truman (D)	[32]
3	Marshall, GeorgeGeorge C. Marshall (1880–1959)	September 21, 1950	September 12, 1951	356 days	Independent	Pennsylvania	Truman, HarryHarry S Truman (D)	[33]
4	Lovett, RobertRobert A. Lovett (1895–1986)	September 17, 1951	January 20, 1953	1 year, 125 days	Republican	New York	Truman, HarryHarry S Truman (D)	[34]
5	Wilson, CharlesCharles Erwin Wilson (1890–1961)	January 28, 1953	October 8, 1957	4 years, 253 days	Republican	Michigan	Eisenhower, DwightDwight D. Eisenhower (R)	[35]
6	McElroy, NeilNeil H. McElroy (1904–1972)	October 9, 1957	December 1, 1959	2 years, 53 days	Republican	Ohio	Eisenhower, DwightDwight D. Eisenhower (R)	[36]
7	Gates, ThomasThomas S. Gates Jr. (1906–1983)	December 2, 1959	January 20, 1961	1 year, 49 days	Republican	Pennsylvania	Eisenhower, DwightDwight D. Eisenhower (R)	[37]
8	McNamara, RobertRobert McNamara (1916–2009)	January 21, 1961	February 29, 1968	7 years, 39 days	Republican	Michigan	Kennedy, JohnJohn F. Kennedy (D) Lyndon B. Johnson (D)	[38]
9	Clifford, ClarkClark Clifford (1906–1998)	March 1, 1968	January 20, 1969	325 days	Democratic	Maryland	Johnson, LyndonLyndon B. Johnson (D)	[39]
10	Laird, MelvinMelvin R. Laird (1922–2016)	January 22, 1969	January 29, 1973	4 years, 7 days	Republican	Wisconsin	Nixon, RichardRichard Nixon (R)	[40]
11	Richardson, ElliotElliot Richardson (1920–1999)	January 30, 1973	May 24, 1973	114 days	Republican	Massachusetts	Nixon, RichardRichard Nixon (R)	[41]
–	Clements, BillBill Clements (1917–2011) Acting	May 24, 1973	July 2, 1973	39 days	Republican	Texas	Nixon, RichardRichard Nixon (R)	[42]
12	Schlesinger, JamesJames R. Schlesinger (1929–2014)	July 2, 1973	November 19, 1975	2 years, 140 days	Republican	Virginia	Nixon, RichardRichard Nixon (R) Gerald Ford (R)	[43]
13	Rumsfeld, DonaldDonald Rumsfeld (1932–2021)	November 20, 1975	January 20, 1977	1 year, 61 days	Republican	Illinois	Ford, GeraldGerald Ford (R)	[44]
14	Brown, HaroldHarold Brown (1927–2019)	January 20, 1977	January 20, 1981	4 years, 0 days	Independent	California	Carter, JimmyJimmy Carter (D)	[45]
15	Weinberger, CasparCaspar Weinberger (1917–2006)	January 21, 1981	November 23, 1987	6 years, 306 days	Republican	California	Reagan, RonaldRonald Reagan (R)	[46]
16	Carlucci, FrankFrank Carlucci (1930–2018)	November 23, 1987	January 20, 1989	1 year, 58 days	Republican	Virginia	Reagan, RonaldRonald Reagan (R)	[47]
–	Taft, WilliamWilliam Howard Taft IV (born 1945) Acting	January 20, 1989	March 21, 1989	60 days	Republican	Ohio	Bush, GeorgeGeorge H. W. Bush (R)	[48]
17	Cheney, DickDick Cheney (born 1941)	March 21, 1989	January 20, 1993	3 years, 305 days	Republican	Wyoming	Bush, GeorgeGeorge H. W. Bush (R)	[49]
18	Aspin, LesLeslie Aspin (1938–1995)	January 20, 1993[50][51]	February 3, 1994	1 year, 14 days	Democratic	Wisconsin	Clinton, BillBill Clinton (D)	[52]
19	Perry, WilliamWilliam Perry (born 1927)	February 3, 1994	January 23, 1997[53] / January 24, 1997[50][54]	2 years, 356 days	Democratic	Pennsylvania	Clinton, BillBill Clinton (D)	.
20	Cohen, WilliamWilliam Cohen (born 1940)	January 24, 1997	January 20, 2001	3 years, 362 days	Republican	Maine	Clinton, BillBill Clinton (D)	[55]
21	Rumsfeld, DonaldDonald Rumsfeld (1932–2021)	January 20, 2001	December 18, 2006	5 years, 332 days (7 years, 29 days total)	Republican	Illinois	Bush, George W.George W. Bush (R)	[56]
22	Gates, RobertRobert Gates (born 1943)	December 18, 2006	June 30, 2011[57] / July 1, 2011[50]	4 years, 194 days	Republican	Texas	Bush, George W.George W. Bush (R) Barack Obama (D)	.
23	Panetta, LeonLeon Panetta (born 1938)	July 1, 2011	February 26, 2013	1 year, 240 days	Democratic	California	Obama, BarackBarack Obama (D)	[58]
24	Hagel, ChuckChuck Hagel (born 1946)	February 27, 2013	February 17, 2015	1 year, 355 days	Republican	Nebraska	Obama, BarackBarack Obama (D)	[59]
25	Carter, AshAsh Carter (1954–2022)	February 17, 2015	January 20, 2017	1 year, 338 days	Democratic	Massachusetts	Obama, BarackBarack Obama (D)	[60][50]
26	Mattis, JimJim Mattis (born 1950)	January 20, 2017	January 1, 2019	1 year, 345 days	Independent	Washington	Trump, DonaldDonald Trump (R)	[61]
–	Shanahan, PatrickPatrick M. Shanahan (born 1962) Acting	January 1, 2019	June 23, 2019	173 days	Independent	Washington	Trump, DonaldDonald Trump (R)	[62]
–	Esper, MarkMark Esper (born 1964) Acting	June 24, 2019	July 15, 2019	21 days	Republican	Virginia	Trump, DonaldDonald Trump (R)	[63]
–	Esper, MarkRichard V. Spencer (born 1954) Acting	July 15, 2019	July 23, 2019	8 days	Republican	Wyoming	Trump, DonaldDonald Trump (R)	[64]
27	Esper, MarkMark Esper (born 1964)	July 23, 2019	November 9, 2020	1 year, 109 days	Republican	Virginia	Trump, DonaldDonald Trump (R)	[63]
–	Miller, Christopher C.Christopher C. Miller (born 1965) Acting	November 9, 2020	January 20, 2021	72 days	Republican	Iowa	Trump, DonaldDonald Trump (R)	[63]
–	Norquist, David L.David Norquist (born 1966) Acting	January 20, 2021	January 22, 2021	2 days	Republican	Massachusetts	Biden, JoeJoe Biden (D)	[65]
28	Austin, LloydLloyd Austin (born 1953)	January 22, 2021	Incumbent	2 years, 279 days	Independent	Georgia	Biden, JoeJoe Biden (D)	[66]

Succession

Presidential succession

The secretary of defense is sixth in the presidential line of succession, following the secretary of the treasury and preceding the attorney general.[67]

Secretary succession

On December 10, 2020, President Donald Trump modified the order of succession for the office of Secretary of Defense in Executive Order 13963. The order of succession is:[68]


#	Office
1	Deputy Secretary of Defense
2*	Secretary of the Army Secretary of the Navy Secretary of the Air Force
3	Under Secretary of Defense for Policy
4	Under Secretary of Defense for Intelligence and Security
5	Chief Management Officer of the Department of Defense
6	Under Secretary of Defense for Acquisition and Sustainment
7	Under Secretary of Defense for Research and Engineering
8	Under Secretary of Defense (Comptroller)
9	Under Secretary of Defense for Personnel and Readiness
10	Deputy Under Secretary of Defense for Policy
11	Deputy Under Secretary of Defense for Intelligence and Security;
12	Deputy Under Secretary of Defense for Acquisition and Sustainment;
13	Deputy Under Secretary of Defense for Research and Engineering
14	Deputy Under Secretary of Defense (Comptroller)
15	Deputy Under Secretary of Defense for Personnel and Readiness
16*	General Counsel of the Department of Defense Assistant Secretaries of Defense Director of Cost Assessment and Program Evaluation Director of Operational Test and Evaluation Chief Information Officer of the Department of Defense
17*	Under Secretary of the Army Under Secretary of the Navy Under Secretary of the Air Force
18*	Assistant Secretaries of the Army Assistant Secretaries of the Navy Assistant Secretaries of the Air Force General Counsel of the Army General Counsel of the Navy General Counsel of the Air Force
	*Order of Succession is determined by the seniority of officials in their role.

References

Citations

Trask & Goldberg: p. 177.
"Positional Colors for the Department of Defense". United States Army Institute of Heraldry. Archived from the original on September 16, 2023. Retrieved September 16, 2023.
"3 U.S. Code § 19 – Vacancy in offices of both President and Vice President; officers eligible to act".
5 U.S.C. § 5312
10 U.S.C. § 113.
DoDD 5100.1: Enclosure 2: a
5 U.S.C. § 101.
"NATO – member countries". NATO. Retrieved January 4, 2012.
50 U.S.C. § 402.
10 U.S.C. § 113
The National Security Act of 1947 originally required an interval of ten years after relief from active duty, which was reduced to seven years by Sec. 903(a) of the 2008 National Defense Authorization Act. In 1950 Congress passed special legislation (Pub. Law 81-788) to allow George C. Marshall to serve as Secretary of Defense while remaining a commissioned officer on the active list of the Army (Army regulations kept all five-star generals on active duty for life), but warned:
It is hereby expressed as the intent of the Congress that the authority granted by this Act is not to be construed as approval by the Congress of continuing appointments of military men to the office of Secretary of Defense in the future. It is hereby expressed as the sense of the Congress that after General Marshall leaves the office of Secretary of Defense, no additional appointments of military men to that office shall be approved.
Defenselink bio, Retrieved February 8, 2010; and Marshall Foundation bio, Retrieved February 8, 2010.
10 U.S.C. § 162
Joint Publication 1: II-9, II-10 & II-11.
10 U.S.C. § 3011
10 U.S.C. § 5011
10 U.S.C. § 8011
Trask & Goldberg: pp.11 & 52
Cohen: p.231.
Korb, Lawrence J.; Ogden, Pete (October 31, 2006). "Rumsfeld's Management Failures". Center for American Progress. Retrieved January 6, 2012.
10 U.S.C. § 152
Cabinets and Counselors: The President and the Executive Branch (1997). Congressional Quarterly. p. 87.
"Senate confirms Biden's Defense Secretary Lloyd Austin, the first Black Pentagon chief". Fox News. January 22, 2021. Retrieved January 22, 2021.
Peters, Heidi M. (December 1, 2016). "Waiver of Statutory Qualifications Relating to Prior Military Service of the Secretary of Defense". UNT Digital Library. Retrieved December 8, 2020.
"Why Generals Need Congressional Waivers To Become Defense Secretary". NPR.org. Retrieved December 8, 2020.
Youssef, Nancy A. (January 21, 2021). "Lloyd Austin Receives Waiver Allowing Him to Become Defense Chief". The Wall Street Journal. Retrieved January 21, 2021.
Department of Defense Directive 5100.01 Functions of the Department of Defense and Its Major Components
DoDD 5100.1: p.1.
DoDM 1348.33, Vol 3: p.39 (Enclosure 3)
50 U.S.C. § 402
"Salary Table No. 2021-EX Rates of Basic Pay for the Executive Schedule (EX)" (PDF). Archived (PDF) from the original on January 23, 2021.
"James V. Forrestal – Harry S. Truman Administration". Office of the Secretary of Defense – Historical Office.
"Louis A. Johnson – Harry S. Truman Administration". Office of the Secretary of Defense – Historical Office.
"George C. Marshall – Harry S. Truman Administration". Office of the Secretary of Defense – Historical Office.
"Robert A. Lovett – Harry S. Truman Administration". Office of the Secretary of Defense – Historical Office.
"Charles E. Wilson – Dwight D. Eisenhower Administration". Office of the Secretary of Defense – Historical Office.
"Neil H. McElroy – Dwight D. Eisenhower Administration". Office of the Secretary of Defense – Historical Office.
"Thomas S. Gates, Jr. – Dwight D. Eisenhower Administration". Office of the Secretary of Defense – Historical Office.
"Robert S. McNamara – John F. Kennedy / Lyndon Johnson Administration". Office of the Secretary of Defense – Historical Office.
"Clark M. Gifford – Lyndon Johnson Administration". Office of the Secretary of Defense – Historical Office.
"Melvin R. Laird – Richard Nixon Administration". Office of the Secretary of Defense – Historical Office.
"Elliot L. Richardson – Richard Nixon Administration". Office of the Secretary of Defense – Historical Office.
Cantwell, Gerald T. (1997). Citizen Airmen: A History of the Air Force Reserve 1946–1994. DIANE Publishing. p. 252. ISBN 9781428991620. In June 1973, Representative O. C. Fisher complained to William P. Clements, Jr., acting Secretary of Defense, that the authority, responsibility, and, consequently, effectiveness of the chiefs of the various reserve components seemed to be eroding.
"James R. Schlesinger – Richard Nixon / Gerald Ford Administration". Office of the Secretary of Defense – Historical Office.
"Donald H. Rumsfeld – Gerald Ford Administration". Office of the Secretary of Defense – Historical Office.
"Harold Brown – James Carter Administration". Office of the Secretary of Defense – Historical Office.
"Caspar W. Weinberger – Ronald Reagan Administration". Office of the Secretary of Defense – Historical Office.
"Frank C. Carlucci – Ronald Reagan Administration". Office of the Secretary of Defense – Historical Office.
"II. Secretaries of Defense". Washington Headquarters Services – Pentagon Digital Library. p. 9. Archived from the original (PDF) on February 11, 2017. Retrieved February 8, 2017. (Deputy Secretary of Defense William H. Taft served as acting secretary of defense from 20 January 1989 until 21 March 1989).
"Richard B. Cheney – George H.W. Bush Administration". Office of the Secretary of Defense – Historical Office.
Department of Defense Key Officials September 1947 – February 2019
"Les Aspin Serves One Year As Defense Secretary".
"Leslie Aspin – William J. Clinton Administration". Office of the Secretary of Defense – Historical Office.
"William J. Perry – William J. Clinton Administration". Office of the Secretary of Defense – Historical Office.
"II. Secretaries of Defense". Washington Headquarters Services – Pentagon Digital Library. p. 10. Archived from the original (PDF) on February 11, 2017. Retrieved February 8, 2017. Sworn in as secretary of defense on 3 February 1994 and served until 24 January 1997.
"William S. Cohen – William J. Clinton Administration". Office of the Secretary of Defense – Historical Office.
"Donald H. Rumsfeld – George W. Bush Administration". Office of the Secretary of Defense – Historical Office.
"Robert M. Gates – George W. Bush / Barack Obama Administration". Office of the Secretary of Defense – Historical Office.
"Leon E. Panetta – Barack Obama Administration". Office of the Secretary of Defense – Historical Office.
"Chuck Hagel – Barack Obama Administration". Office of the Secretary of Defense – Historical Office.
"Ashton B. Carter – Barack Obama Administration". Office of the Secretary of Defense – Historical Office.
"James N. Mattis – Donald Trump Administration". Office of the Secretary of Defense – Historical Office.
"PN583 – Patrick M. Shanahan – Department of Defense". www.congress.gov. Library of Congress. July 18, 2017. Retrieved January 1, 2019.
"Dr. Mark T. Esper – Acting Secretary of Defense". United States Department of Defense. June 24, 2019. Retrieved June 24, 2019.
"Letter from Acting Secretary of Defense Richard V. Spencer to Pentagon". USNI News. July 15, 2019. Retrieved July 16, 2019.
"Trump administration official Norquist sworn in as acting Pentagon chief". The Hill. January 20, 2021. Archived from the original on January 20, 2021. Retrieved January 20, 2021.
"Senate confirms Lloyd Austin to be first Black defense secretary". cnn.com. January 22, 2021. Archived from the original on January 22, 2021. Retrieved January 22, 2021.
3 U.S.C. § 19.
"Executive Order on Providing an Order of Succession within the Department of Defense". December 10, 2020. Retrieved January 9, 2022.

Federal law

Directives, regulations and manuals

Department of Defense Directive 5100.1: Functions of the Department of Defense and Its Major Components (PDF). Department of Defense Directive. Washington, D.C.: U.S. Department of Defense. December 21, 2010. Archived from the original (PDF) on May 25, 2017. Retrieved August 30, 2011.
Department of Defense Manual 1348.33, Volume 1: Manual of Military Decorations and Awards: General Information, Medal of Honor, and Defense/Joint Decorations and Awards (PDF). Department of Defense Manual. Washington, D.C.: U.S. Department of Defense. March 7, 2013. Archived from the original (PDF) on March 22, 2011.
Department of Defense Manual 1348.33, Volume 2: Manual of Military Decorations and Awards: General Information, Medal of Honor, and Defense/Joint Decorations and Awards (PDF). Department of Defense Manual. Washington, D.C.: U.S. Department of Defense. May 31, 2013. Archived from the original (PDF) on March 22, 2011.
Department of Defense Manual 1348.33, Volume 3: Manual of Military Decorations and Awards: General Information, Medal of Honor, and Defense/Joint Decorations and Awards (PDF). Department of Defense Manual. Washington, D.C.: U.S. Department of Defense. November 23, 2010. Archived from the original (PDF) on February 26, 2013. Retrieved June 14, 2013.
Joint Publication 1 – Doctrine for the Armed Forces of the United States (PDF). Joint Publications. Washington, D.C.: U.S. Department of Defense. March 25, 2013. Archived from the original (PDF) on October 27, 2011.
Joint Publication 1-04 – Legal Support to Military Operations (PDF). Joint Publications. Washington, D.C.: U.S. Department of Defense. August 17, 2011. Archived from the original (PDF) on March 13, 2013. Retrieved June 14, 2013.

External links

Official website

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[DoD50:177-1] Trask & Goldberg: p. 177.

[2] "Positional Colors for the Department of Defense". United States Army Institute of Heraldry. Archived from the original on September 16, 2023. Retrieved September 16, 2023.

[3] "3 U.S. Code § 19 – Vacancy in offices of both President and Vice President; officers eligible to act".

[UnitedStatesCode|5|5312-4] 5 U.S.C. § 5312

[5] 10 U.S.C. § 113.

[5100.1-6] DoDD 5100.1: Enclosure 2: a

[7] 5 U.S.C. § 101.

[8] "NATO – member countries". NATO. Retrieved January 4, 2012.

[9] 50 U.S.C. § 402.

[10] 10 U.S.C. § 113

[11] The National Security Act of 1947 originally required an interval of ten years after relief from active duty, which was reduced to seven years by Sec. 903(a) of the 2008 National Defense Authorization Act. In 1950 Congress passed special legislation (Pub. Law 81-788) to allow George C. Marshall to serve as Secretary of Defense while remaining a commissioned officer on the active list of the Army (Army regulations kept all five-star generals on active duty for life), but warned:
It is hereby expressed as the intent of the Congress that the authority granted by this Act is not to be construed as approval by the Congress of continuing appointments of military men to the office of Secretary of Defense in the future. It is hereby expressed as the sense of the Congress that after General Marshall leaves the office of Secretary of Defense, no additional appointments of military men to that office shall be approved.
Defenselink bio, Retrieved February 8, 2010; and Marshall Foundation bio, Retrieved February 8, 2010.

[UnitedStatesCode|10|162-12] 10 U.S.C. § 162

[JP1:II9-11-13] Joint Publication 1: II-9, II-10 & II-11.

[14] 10 U.S.C. § 3011

[15] 10 U.S.C. § 5011

[16] 10 U.S.C. § 8011

[DoD50:11-52-17] Trask & Goldberg: pp.11 & 52

[SupCom:231-18] Cohen: p.231.

[19] Korb, Lawrence J.; Ogden, Pete (October 31, 2006). "Rumsfeld's Management Failures". Center for American Progress. Retrieved January 6, 2012.

[20] 10 U.S.C. § 152

[21] Cabinets and Counselors: The President and the Executive Branch (1997). Congressional Quarterly. p. 87.

[22] "Senate confirms Biden's Defense Secretary Lloyd Austin, the first Black Pentagon chief". Fox News. January 22, 2021. Retrieved January 22, 2021.

[23] Peters, Heidi M. (December 1, 2016). "Waiver of Statutory Qualifications Relating to Prior Military Service of the Secretary of Defense". UNT Digital Library. Retrieved December 8, 2020.

[24] "Why Generals Need Congressional Waivers To Become Defense Secretary". NPR.org. Retrieved December 8, 2020.

[25] Youssef, Nancy A. (January 21, 2021). "Lloyd Austin Receives Waiver Allowing Him to Become Defense Chief". The Wall Street Journal. Retrieved January 21, 2021.

[DOMP-26] Department of Defense Directive 5100.01 Functions of the Department of Defense and Its Major Components

[5100.1:1-27] DoDD 5100.1: p.1.

[1348.33,_V3:39-28] DoDM 1348.33, Vol 3: p.39 (Enclosure 3)

[29] 50 U.S.C. § 402

[Salary-30] "Salary Table No. 2021-EX Rates of Basic Pay for the Executive Schedule (EX)" (PDF). Archived (PDF) from the original on January 23, 2021.

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[Citizen_Airmen-42] Cantwell, Gerald T. (1997). Citizen Airmen: A History of the Air Force Reserve 1946–1994. DIANE Publishing. p. 252. ISBN 9781428991620. In June 1973, Representative O. C. Fisher complained to William P. Clements, Jr., acting Secretary of Defense, that the authority, responsibility, and, consequently, effectiveness of the chiefs of the various reserve components seemed to be eroding.

[Historical_Office_James_R._Schlesinger-43] "James R. Schlesinger – Richard Nixon / Gerald Ford Administration". Office of the Secretary of Defense – Historical Office.

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[Historical_Office_Harold_Brown-45] "Harold Brown – James Carter Administration". Office of the Secretary of Defense – Historical Office.

[Historical_Office_Caspar_W._Weinberger-46] "Caspar W. Weinberger – Ronald Reagan Administration". Office of the Secretary of Defense – Historical Office.

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[48] "II. Secretaries of Defense". Washington Headquarters Services – Pentagon Digital Library. p. 9. Archived from the original (PDF) on February 11, 2017. Retrieved February 8, 2017. (Deputy Secretary of Defense William H. Taft served as acting secretary of defense from 20 January 1989 until 21 March 1989).

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[DODKO-50] Department of Defense Key Officials September 1947 – February 2019

[CQAlmanac1993-51] "Les Aspin Serves One Year As Defense Secretary".

[Historical_Office_Leslie_Aspin-52] "Leslie Aspin – William J. Clinton Administration". Office of the Secretary of Defense – Historical Office.

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[54] "II. Secretaries of Defense". Washington Headquarters Services – Pentagon Digital Library. p. 10. Archived from the original (PDF) on February 11, 2017. Retrieved February 8, 2017. Sworn in as secretary of defense on 3 February 1994 and served until 24 January 1997.

[Historical_Office_William_S._Cohen-55] "William S. Cohen – William J. Clinton Administration". Office of the Secretary of Defense – Historical Office.

[Historical_Office_Rumsfeld_Bush_Administration-56] "Donald H. Rumsfeld – George W. Bush Administration". Office of the Secretary of Defense – Historical Office.

[Historical_Office_Robert_M._Gates-57] "Robert M. Gates – George W. Bush / Barack Obama Administration". Office of the Secretary of Defense – Historical Office.

[Historical_Office_Leon_E._Panetta-58] "Leon E. Panetta – Barack Obama Administration". Office of the Secretary of Defense – Historical Office.

[Historical_Office_Chuck_Hagel-59] "Chuck Hagel – Barack Obama Administration". Office of the Secretary of Defense – Historical Office.

[Historical_Office_Ashton_B._Carter-60] "Ashton B. Carter – Barack Obama Administration". Office of the Secretary of Defense – Historical Office.

[Historical_Office_James_N._Mattis-61] "James N. Mattis – Donald Trump Administration". Office of the Secretary of Defense – Historical Office.

[62] "PN583 – Patrick M. Shanahan – Department of Defense". www.congress.gov. Library of Congress. July 18, 2017. Retrieved January 1, 2019.

[esperbio-63] "Dr. Mark T. Esper – Acting Secretary of Defense". United States Department of Defense. June 24, 2019. Retrieved June 24, 2019.

[SpencerActingSecDef-64] "Letter from Acting Secretary of Defense Richard V. Spencer to Pentagon". USNI News. July 15, 2019. Retrieved July 16, 2019.

[65] "Trump administration official Norquist sworn in as acting Pentagon chief". The Hill. January 20, 2021. Archived from the original on January 20, 2021. Retrieved January 20, 2021.

[66] "Senate confirms Lloyd Austin to be first Black defense secretary". cnn.com. January 22, 2021. Archived from the original on January 22, 2021. Retrieved January 22, 2021.

[67] 3 U.S.C. § 19.

[68] "Executive Order on Providing an Order of Succession within the Department of Defense". December 10, 2020. Retrieved January 9, 2022.