The United States Department of Defense, also referred to as the Department of War, is an executive department of the United States federal government charged with coordinating and supervising the Uni
An aerial view of the Pentagon
President Truman signs the National Security Act Amendment of 1949
A December 2013 Department of Defense organizational chart
Joint Chiefs of Staff and Joint Staff organizational chart
The United States secretary of defense, secondarily titled the secretary of war, is the head of the United States Department of Defense, the executive department of the U.S. Armed Forces, and is a hig
United States Department of Defense
…Department of Defense is "to provide the military forces needed to deter war and ensure our nation's security". The Department of Defense is headed by the secretary of defense, a cabinet-level official who reports directly to the president of the United States. The president is commander-in-chief of the U.S. Armed Forces…
Pete Hegseth Official Portrait
Donald Rumsfeld is sworn in as Secretary of Defense by Associate Supreme Court Justice Potter Stewart as U.S. President Gerald R. Ford and Chairman of The Joint Chiefs of Staff General George S. Brown watch at The Pentagon on 20 November 1975.
James Forrestal Sec Of Def