U.S. Department of Defense

The U.S. Department of Defense (DoD) is the federal agency responsible for coordinating and overseeing the country’s military operations and national security. It manages the Army, Navy, Air Force, and Marine Corps, ensuring the defense of the United States and its interests around the world. The DoD develops military strategies, conducts research and development for defense technologies, and provides support and resources for service members and their families. It operates under the leadership of the Secretary of Defense, who is a key member of the President’s Cabinet and advises on national security matters.