The Secretary of Defense is the highest-ranking civilian official in charge of the United States Department of Defense. They are responsible for formulating and implementing defense policies and overseeing the military branches.
Related terms
Military-industrial complex: Refers to the close relationship between government officials, defense contractors, and the military industry.
Pentagon: The headquarters building where the U.S. Department of Defense is located.
National Security Council: A group within the executive branch that advises the President on matters related to national security.