Office of the Secretary of Defense (OSD)

office of the under secretary of defense for acquisition and technology

Office of the Secretary of the Navy

Office of the Special Envoy of the Secretary-General for the future status process for Kosovo (UNOSEK)

Office of the Special Representative of the Secretary-General for West Africa (UNOWA)

Private Office of the Secretary General

on screen display (OSD)

Assistant Secretary General for Defense Investment

Assistant Secretary General for Defense Policy and Planning

Assistant Secretary of Defense (ASD)

Secretary of Defense (SECDEF)

Under Secretary of Defense (USD)

Under Secretary of Defense for Acquisition, Technology, and Logistics (USD AT&L)

Under Secretary of Defense for Intelligence USD(I)

Defense Prisoner of War/Missing Personnel Office (DPMO)

office of civil and defense mobilization

Assistant Secretary General (ASG)

Assistant Secretary General for Executive Management

Assistant Secretary General for Operations

Assistant Secretary General for Political Affairs and Security Policy

Assistant Secretary General for Public Diplomacy

Assistant Secretary of the Army (Manpower and Reserve Affairs)

Mission of the Representative of the Secretary-General in the Dominican Republic (DOMREP)

Secretary General (SG)

Secretary General’s Close Protection Unit

Secretary of State

Secretary of the Air Force (SAF)

Secretary of the Army (SA)

Secretary of the Navy (SN; SECNAV)

Strategic and Theater Nuclear Forces Policy Deputy Assistant Secretary

perimeter defense (all-around defense)

beach defense mine / beach-defense mine

administrative district office