title: United States Secretary of Defense
text: The United States Secretary of Defense (SECDEF) is the head of the U.S. Department of Defense (DoD). The role was made in 1947. The Secretary of Defense is sixth in line to the United States presidential line of succession.
  
  List of Secretaries
   Parties
  
   Status
  
  References
  
  Other websites
  
    – Includes the Secretary of Defense
   More information on each position and biographies of the current Deputy Secretary (DepSecDef) and Under Secretaries (USDs)
  
   
  1947 establishments in the United States