The secretary of defense is a statutory office, and the general provision in 10 U.S.C. Definition of Secretary of Defense in the Definitions.net dictionary. As information collections requirements rarely require the Office of the Secretary of Defense to respond … Approved by: Robert L. Wilkie, Under Secretary of Defense for Personnel and Readiness . Secretary of Defense - the person who holds the secretaryship of the Defense Department; "the first Defense Secretary was James V. Forrestal who was appointed by Truman" Defense Secretary secretary - a person who is head of an administrative department of government 2. The head of the Department of Defense and the president's key adviser on military policy. The Office of the Secretary of Defense (OSD) is responsible for policy development, planning, resource management and program evaluation. secretary of defense. Under the direction of the President, the Secretary exercises authority, direction, and control over the DoD. The Secretary of Defense is the principal defense policy advisor to the President. Purpose: In accordance with the authority in DoD Directive (DoDD) 5124.02, this issuance: The term “department”, when used with respect to a military department, means the executive part of the department and all field headquarters, forces, reserve components, installations, activities, and functions under the control or supervision of the Secretary of the department. Secretary of Defense rescinds 'Direct Ground Combat Definition and Assignment Rule' By David Vergun February 7, 2013. [5] [6] [7] This position corresponds to what is generally known as a Defense Minister in many other countries. Information and translations of Secretary of Defense in the most comprehensive dictionary definitions resource on the web. 1. the position of the head of the Department of Defense "the position of Defense Secretary was created in 1947" 2. the person who holds the secretaryship of the Defense Department "the first Defense Secretary was James V. Forrestal who was appointed by Truman" Share on Twitter; Share on Facebook; Share on Reddit Central Intelligence Agency. Secretary of Air Force, and the Secretary (and Deputy Secretary) of Defense. § 113 provides that "subject to the direction of the President", its occupant has "authority, direction and control over the Department of Defense". Related WordsSynonymsLegend: Switch to new thesaurus Noun 1. Secretary of Defense (n.). Secretary of Defense Memorandum, “Prohibition of Sexual Harassment in the Department of Defense (DoD),” August 22, 1994 . Meaning of Secretary of Defense. 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