Which law reorganized the US military by creating the Department of Defense, the CIA, and the Air Force?

• A. Goldwater-Nixon Act (1954)
• B. War Powers Act (1973)
• C. Dulles Defense Act (1958)
• D. National Security Act (1947)

Answer: (D)

The question tests understanding of the major postwar restructuring of U.S. national security institutions. The National Security Act of 1947 unified the armed forces under a single Department of Defense, created the Central Intelligence Agency to coordinate foreign intelligence, and established the Air Force as an independent service within the U.S. military. It also set up the National Security Council to advise the president on security matters. In short, this act restructured how the military and intelligence communities were organized and supervised, bringing all three main services (including the Air Force) under DoD and creating a centralized intelligence apparatus.

The other options address different topics or reforms and do not embody this specific structural overhaul.