 Flag of the Chief of Naval Operations |
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The 'Chief of Naval Operations' ('CNO') is the senior military officer in the
United States Navy. The CNO is an
admiral (four-star) and is responsible to the
Secretary of the Navy for the command, utilization of resources and operating efficiency of the operating forces of the Navy and of the Navy shore activities assigned by the Secretary. The CNO has administrative, rather than operational command authority over United States naval forces.
The operational
chain of command runs from the
Secretary of Defense directly to the
combatant commanders, who have command authority over all military forces in their region. This structure, in which the service chiefs are responsible for personnel and readiness issues, while the combatant commanders are operationally responsible for the command of the military forces, is intended to allow the United States military the ability to function as a coherent whole, a system that was instituted as a result of the
Goldwater-Nichols Act of 1986.

Admiral Michael Mullen, CNO, USN
List of CNOs
Organization of the CNO's Office
As a member of the
Joint Chiefs of Staff, the CNO is the principal naval advisor to the
President of the United States, the Secretary of Defense, and the Secretary of the Navy on the conduct of war related to naval matters, and is the principal advisor and naval executive to the Secretary on the conduct of naval activities of the
United States Department of the Navy. Assistants are the
Vice Chief of Naval Operations (VCNO), the
Deputy Chiefs of Naval Operations (DCNOs) and a number of other ranking officers. These officers and their staffs are collectively known as the
Office of the Chief of Naval Operations (OpNav).
''The organization of the CNO's Office''

Organisation of the CNO's Office
See also
★
Deputy Chief of Naval Operations (MPTE)
References
1. Though later promoted to Fleet Admiral with appointment as Chief of Staff to the Commander in Chief, Leahy held the rank of Admiral for the duration of his tenure as CNO.
★
Chief of Naval Operations: Responsibilites, USN.
★
Chiefs of Naval Operations, Naval Historical Center
★
Office of the Chief of Naval Operations, office organisation chart