United States Secretary of the Navy
The secretary of the Navy (SECNAV) is a statutory officer and the head of the Department of the Navy, a military department within the United States Department of Defense.
United States Secretary of the Navy
Image: Gilbert Stuart, John Adams, c. 1800 1815, NGA 42933
Image: John langdon
Image: Silas Deane Du Simitier and B.L. Prevost
United States Department of Defense
The United States Department of Defense is an executive branch department of the federal government of the United States charged with coordinating and supervising all agencies and functions of the U.S. government directly related to national security and the United States Armed Forces. As of June 2022, the U.S. Department of Defense is the largest employer in the world, with over 1.34 million active-duty service members, including soldiers, marines, sailors, airmen, and guardians. The Department of Defense also maintains over 778,000 National Guard and reservists, and over 747,000 civilians bringing the total to over 2.87 million employees. Headquartered at the Pentagon in Arlington County, Virginia, just outside Washington, D.C., the Department of Defense's stated mission is to provide "the military forces needed to deter war and ensure our nation's security".
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