OFFICE OF THE
        SECRETARY OF DEFENSE
          DEFENSE AGENCIES 
        DOD FIELD ACTIVITIES

                ORGANIZATION
                AND FUNCTIONS
                GUIDEBOOK

February 2000
Updated:  March 2001

       This Guidebook outlines the functions of the Office of the Secretary of Defense (OSD), Defense Agencies, and DoD Field Activities. Where appropriate, the functional statement cites the pertinent Department of Defense (DoD) Directive which charters the organization and provides more detailed information on the authorities, responsibilities, and functions of the organization.

       General information on the Military Departments, the Joint Chiefs of Staff,Unified Combatant Commands, and the Inspector General of the DoD is also provided.  More detailed information may be found in DoD Directives, the United States Government Manual, or by direct contact with the organizations. DoD personnel may obtain copies from OSD Publications Counter Service, Room 3A1037, Pentagon, (703) 695-2167.  All other personnel may obtain copies from OSD Public Affairs, Room 1E757, Pentagon, (703) 697-5737.

TABLE OF CONTENTS

DEPARTMENT OF DEFENSE

• Organizational Structure
       o   Department of Defense
       o   Secretary of Defense
       o   Deputy Secretary of Defense
       o   Office of the Secretary of Defense
       o   Military Departments
       o   The Joint Chiefs of Staff
       o   Unified Combatant Commands
       o   Inspector General of the Department of Defense
       o   Defense Agencies
       o   DoD Field Activities
• DoD Organization Chart
• Organization Chart of the Military Departments
• JCS Organization Chart
• Unified Combatant Commands Chart

OFFICE OF THE SECRETARY OF DEFENSE (OSD)

• Organization Chart
• Organizations and Functions
• Under Secretary of Defense for Acquisition, Technology and Logistics
       o   Director of Defense Research and Engineering
       o   Deputy Under Secretary of Defense (Acquisition and Technology)
       o   Deputy Under Secretary of Defense (Logistics and Materiel Readiness)
       o   Assistant to the Secretary of Defense (Nuclear and Chemical and
                Biological Defense Programs)
       o   Director of Small and Disadvantaged Business Utilization
       o   Deputy Under Secretary of Defense (Acquisition Reform)
       o   Deputy Under Secretary of Defense (Advanced Systems and Concepts)
       o   Deputy Under Secretary of Defense (Environmental Security)
       o   Deputy Under Secretary of Defense (Industrial Affairs)
       o   Deputy Under Secretary of Defense (Installations)
       o   Deputy Under Secretary of Defense (Science and Technology)
• Under Secretary of Defense (Comptroller)/Chief Financial Officer
       o   Principal Deputy Under Secretary of Defense (Comptroller)
       o   Director for Program Analysis and Evaluation
• Under Secretary of Defense for Personnel and Readiness
       o   Assistant Secretary of Defense (Force Management Policy)
       o   Assistant Secretary of Defense (Health Affairs)
       o   Assistant Secretary of Defense (Reserve Affairs)
       o   Deputy Under Secretary of Defense (Readiness)
       o   Deputy Under Secretary of Defense (Program Integration)
       o   Deputy Under Secretary of Defense (Planning)
• Under Secretary of Defense for Policy
       o   Principal Deputy Under Secretary of Defense (Policy)
       o   Assistant Secretary of Defense (International Security Affairs)
       o   Assistant Secretary of Defense (Strategy and Threat Reduction)
       o   Assistant Secretary of Defense (Special Operations and Low-Intensity Conflict)
       o   Deputy Under Secretary of Defense (Policy Support)
       o   Deputy Under Secretary of Defense (Technology Security Policy)
       o   Defense Advisor, U.S. Mission NATO
• Assistant Secretary of Defense (Command, Control, Communications, and Intelligence)
• Assistant Secretary of Defense (Legislative Affairs)
• Assistant Secretary of Defense (Public Affairs)
• General Counsel of the DoD
• Director of Operational Test and Evaluation
• Assistant to the Secretary of Defense (Intelligence Oversight)
• Director of Administration and Management
• Director of Net Assessment

DEFENSE AGENCIES

• Organization Chart
       o   Ballistic Missile Defense Organization
       o   Defense Advanced Research Projects Agency
       o   Defense Commissary Agency
       o   Defense Contract Audit Agency
       o   Defense Contract Management Agency
       o   Defense Finance and Accounting Service
       o   Defense Information Systems Agency
       o   Defense Intelligence Agency
       o   Defense Legal Services Agency
       o   Defense Logistics Agency
       o   Defense Security Cooperation Agency
       o   Defense Security Service
       o   Defense Threat Reduction Agency
       o   National Imagery and Mapping Agency
       o   National Security Agency/Central Security Service

DOD FIELD ACTIVITIES

• Organization Chart
       o   American Forces Information Service
       o   Defense Prisoner of War/Missing Personnel Office
       o   Department of Defense Education Activity
       o   DoD Human Resources Activity
       o   Office of Economic Adjustment
       o   TRICARE Management Activity
       o   Washington Headquarters Services