INTRODUCTION
The Chief of Staff of the Army (abbreviated as CSA) is a statutory office held by a four-star general in the United States Army, and is the most senior uniformed officer assigned to serve in the Department of the Army, and as such is the principal military advisor and a deputy to the Secretary of the Army; and is, in a separate capacity, a member of the Joint Chiefs of Staff, and thereby a military advisor to the National Security Council, the Secretary of Defense, and the President. The Chief of Staff is typically the highest-ranking officer on active-duty in the U.S. Army unless the Chairman and/or the Vice Chairman of the Joint Chiefs of Staff are Army officers. The Chief of Staff of the Army is an administrative position based in the Pentagon, and while the Chief of Staff does not have operational command authority over Army forces proper (that is within the purview of the Combatant Commanders who reports to the Secretary of Defense), the Chief of Staff does exercise supervision of army units and organizations as the designee of the Secretary of the Army.
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ARMY CHIEFS OF STAFF
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