The Department of Defense is America's largest government agency. Our mission is to provide the military forces needed to deter war and ensure our nation's security.

The United States Department of Defense (DoD, [2] USDOD, or DOD) is an executive branch department of the federal government of the United States charged with coordinating and supervising the five U.S. armed services, the Army; Navy; Marines; Air Force; Space Force; the Coast Guard for some purposes, and related functions and agencies.

The mission of the Department of Defense is to provide a lethal Joint Force to defend the security of our country and sustain American influence abroad.

The Department of Defense (DOD) provides the military forces needed to deter war, and to protect the security of the United States.

4 days ago · Longstanding Department of Defense (DoD) policy (DoD Instruction (DoDI) 6130.03) provides that it is the policy of the DoD to ensure that service members are “[f]ree of medical conditions or ...

Jan 25, 2025 · Secretary of Defense Pete Hegseth was sworn into his new role leading America's 3.5 million service members and civilians by Vice President JD Vance.

5 days ago · U.S. Department of Defense (DoD), executive division of the U.S. federal government responsible for ensuring national security and supervising U.S. military forces. Based in the Pentagon, it includes the Joint Chiefs of Staff, the departments of the U.S. Army, U.S. Navy, and U.S. Air Force, and

The 2022 National Defense Strategy (NDS) details the Department’s path forward into that decisive decade—from helping to protect the American people, to promoting global security, to seizing new strategic opportunities, and to realizing and defending our democratic values.

The United States Department of Defense (DoD) has a complex organizational structure. It includes the Army , Navy , the Marine Corps , Air Force , Space Force , the Unified combatant commands , U.S. elements of multinational commands (such as NATO and NORAD ), as well as non-combat agencies such as the Defense Intelligence Agency and the ...

To provide insightful and forward-thinking national security advice and support to the Secretary of Defense and Department of Defense leadership on matters affecting strategy, planning,...