Final answer:
The Quadrennial Defense Review is a strategic document mandated by Congress that guides the Department of Defense in setting defense strategy and priorities.
Step-by-step explanation:
The Quadrennial Defense Review (QDR) is a legislatively-mandated review of the Department of Defense (DOD) strategy and priorities. The QDR assesses various aspects of defense policy and aligns strategic objectives with funding and resources. It is a comprehensive evaluation conducted every four years to examine the strategies and priorities that will guide the DOD in defending the nation against current and future threats.
The Department of Defense oversees the many elements of the U.S. armed forces, including the Army, Navy, Marine Corps, and Air Force, and the QDR reflects the department's long-term planning commitments. The secretary of defense, a nonmilitary civilian, heads the DOD and is charged with the responsibility of conducting the QDR. The review helps in shaping the policies and the allocation of resources for defense-related services, such as those provided to U.S. veterans.
The objective of the QDR is not only to assess military capabilities but also to anticipate potential strategic issues or shifts in the global security environment. This includes policies related to protecting the territory of the United States from various threats and considering the budgetary constraints imposed by the president's Office of Management and Budget (OMB).