Department of Defense (USA)

The Department of Defense (DoD) is the U.S. government agency responsible for coordinating and overseeing national security and military operations. It ensures the country’s defense against threats both at home and abroad. The DoD includes the Army, Navy, Air Force, and Marine Corps, as well as various defense agencies. Its main goals are to protect the United States, support international peace, and assist in humanitarian efforts. The Secretary of Defense leads the department, advising the President on military matters and policy. Overall, the DoD plays a critical role in maintaining the nation's safety and security.