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Flag, USA Ministry · Government of United States

Department of Defense

gp:org/usa-usa-department-of-defense

Official website

Head of institution

Mandate

What it is responsible for

Verified
  • Provide the military forces needed to deter war and protect the country
  • Army, Navy, Marine Corps and Air Force
  • Joint Chiefs of Staff and combatant commands
  • Defense agencies and field activities

From the official description[2]

Evidence

Sources

  1. [1]
    The Cabinet

    The White HouseOfficialChecked 17 Oct 2026

  2. [2]
    Federal Register agency record: Defense Department

    Office of the Federal Register (NARA/GPO)OfficialChecked 17 Oct 2026