The Joint Chiefs of Staff JCS

The Joint Chiefs began as an improvisation. In early 1942, needing a body to work with the British Chiefs of Staff, Franklin Roosevelt brought the heads of the Army, Navy, and Army Air Forces together as the Joint Chiefs of Staff, with no charter and no law behind them. They planned the war that way. The National Security Act of 1947 made the arrangement permanent, and a 1949 amendment created the post of Chairman. For the next four decades the Chiefs operated by consensus, which critics said produced lowest-common-denominator advice and let the services protect their own budgets.

The Goldwater-Nichols Act of 1986 rebuilt the system after the failures of the Iran hostage rescue and the Grenada invasion. It made the Chairman, rather than the Chiefs as a group, the principal military adviser to the President, the National Security Council, and the Secretary of Defense. It took the Chiefs out of the operational chain of command entirely, which now runs from the President to the Secretary to the combatant commanders. And it created a Vice Chairman and required officers to serve in joint assignments before promotion to general or admiral, forcing the services to cooperate.

The Joint Chiefs today are eight officers: the Chairman, the Vice Chairman, the Chief of Staff of the Army, the Chief of Naval Operations, the Chief of Staff of the Air Force, the Commandant of the Marine Corps, the Chief of Space Operations, and, since 2012, the Chief of the National Guard Bureau. Each is nominated by the President and confirmed by the Senate for a four-year term. The Joint Staff, several hundred officers from all services, supports them from the Pentagon. The Chairman holds the highest rank in the armed forces but, by design, gives advice rather than orders.

The Chairman's independence is the system's point of friction. The office is meant to deliver candid military judgment to civilians who may not want to hear it, and Chairmen have been praised and fired for doing so. Several were dismissed or pushed out in 2025 in a turnover unusual for its pace, renewing debate over whether the post has become political. The Chiefs also remain the public face of the services before Congress, testifying each year on readiness and budgets in hearings that often reveal disagreements with the administration they serve.