The Army, Navy, Air Force, Space Force, Unified Combatant Commands, U.S. elements of multinational commands (such as NATO and NORAD), and non-combat agencies such as the Defense Intelligence Agency and the National Security Agency are all represented on this dod org chart. The organizational framework of the United States Department of Defense is referred to as a DoD org chart. It is the property of the United States Department of the Federal Government. The primary responsibility of the Department of Defense is to ensure coordination and oversight of all government agencies. DoD headquarters are in Arlington, Virginia, near Washington, D.C. You may not be aware that the Department of Defense has the world's largest workforce, nearly 1.3 million employees.