The longest-serving secretary of defense is Robert McNamara, who served for a total of 7 years, 39 days. (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). Colin Luther Powell (2001-2005) (see also former Secretary Powell’s Archive site) Condoleezza Rice (2005-2009) (see also former Secretary Rice’s Archive site) Hillary Rodham Clinton (2009-2013) (see also Secretary Clinton’s Archive site) John Kerry (2013-2017) (see also Secretary Kerry’s Archive site) (2012). The Office of the Secretary of Defense (OSD) is responsible for policy development, planning, resource management and program evaluation. The secretary is a member of the National Security Council, the National Aeronautics and Space Administration and other agencies. The secretary of defense exercises authority, direction and control over the three departments of the U.S. armed forces -- the Army and the Navy, as well as the Air Force.The main job of the U.S. secretary of defense is to plan, develop and execute policies that concern the military affairs and national security of the country. Secretary of Defense is a Level I position of the Executive Schedule,[4] and thus earns a salary of $210,700 per year as of January 2018. The deputy secretary of defense (acronym: DepSecDef) is a statutory office (10 U.S.C. 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.[29]. The Act also separated the Army Air Forces from the Army to become its own branch of service, the United States Air Force. 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. 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. 20th: William Cohen 6. 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. The Historical Office of the Office of the Secretary of Defense (OSD) dates to 1949. For the DoD intelligence programs the Senate Select Committee on Intelligence and the House Permanent Select Committee on Intelligence have the principal oversight role. Biden Facing Growing Pressure Over Secretary of Defense Pick This Dec. 7, 2011 file photo shows former U.S. Defense Undersecretary Michele Flournoy, preparing for a … 13th and 21st: Donald Rumsfeld 2. For comprehensiveness, the list below includes, in addition to dismissals and resignations, routine job changes such as promotions (e.g. Acting 16th: William Howard Taft IV 3. [21], On November 9, 2020, President Trump tweeted that Christopher C. 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