Office of the Executive Secretary
- Part of the Immediate Office of the Secretary of Defense and is the head of an organization known as the Executive Secretariat. The Executive Secretary provides direct administrative support to the Secretary and Deputy Secretary of Defense.
- http://www.defenselink.mil/execsec/

Global Emerging Infections Surveillance and Response System (DoD-GEIS)
- Established in support of global surveillance, training, research, and response to emerging infectious disease threats through: centralized coordination; with involvement from military facilities and overseas laboratories.
- http://www.geis.fhp.osd.mil/

Under Secretary of Defense for Personnel and Readiness (P&R)
- Maintain the defense workforce; the 1.5 million active duty military and 1.5 million guard and reserve personnel, and the 800,000 civilians that support the Nation's military operations.
- http://www.defenselink.mil/prhome/

Office of the Secretary Defense
- Photographs of the Secretary, Deputy Secretary and the 12 organizations under them. From the Defense Almanac.
- http://www.defenselink.mil/osd/

Supply Chain Systems Transformation
- Develops and maintains projects in support of paperless business functions in the areas of procurement and finance, develops prototypes which will further enhance the role of eBusiness within the Department, and supports other DoD eBusiness efforts.
- http://www.acq.osd.mil/scst/index.htm

Assistant to the Secretary of Defense for Intelligence Oversight ATSD(IO)
- Responsible for the independent oversight of all intelligence, counterintelligence, and intelligence-related activities in the Department of Defense.
- http://www.dod.mil/atsdio/

Director of Administration and Management (DA&M)
- Principal staff assistant and advisor on DoD-wide organizational and administrative management matters.
- http://www.defenselink.mil/odam/

Defense Microelectronics Activity (DMEA)
- Provides a broad spectrum of microelectronics services to DoD. The DMEA is located in Sacramento California.
- http://www.dmea.osd.mil/

Defense Language Institute English Language Center (DLIELC)
- The operational manager for training international military/civilian personnel to speak and teach English. Located at Lackland, AFB, TX.
- http://www.dlielc.org/

Defense Civilian Personnel Management Service
- Provides corporate level leadership in human resources management by developing and managing human resources programs and systems. Supports the Under Secretary of Defense (Personnel and Readiness).
- http://www.cpms.osd.mil/

Office of the Special Assistant for the Gulf War Illnesses
- Provides recently-declassified documents that may be relevant to illnesses affecting Gulf War Veterans.
- http://www.gulflink.osd.mil/

DeploymentLINK
- Health information on past, current and future U.S. military deployments for active duty servicemembers, Reserve components, family members and veterans. From the Directorate for Deployment Health Support.
- http://deploymentlink.osd.mil/

Director of Operational Test and Evaluation (DOT&E)
- Responsible for reviewing and analyzing the results of tests conducted for each major DoD acquisition program; and oversight to ensure those programs confirm operational effectiveness and suitability for combat use.
- http://www.dote.osd.mil/

Director of Program Analysis and Evaluation (PA&E)
- Analyzes and evaluates plans, programs, and budgets in relation to U.S. defense objectives, projected threats, allied contributions, estimated costs, and resource constraints.
- http://www.pae.osd.mil/

Office of the Under Secretary of Defense (Comptroller)
- Responsible for the financial management and policy, Defense budget submission and execution, financial statements and business practices of the Department of Defense.
- http://www.dtic.mil/comptroller/

Department of Defense Inspector General (DoD-IG)
- Responsible for conducting, supervising, monitoring and initiating audits and investigations relating to the programs and operations of the DoD.
- http://www.dodig.osd.mil/

Under Secretary of Defense for Acquisition, Technology and Logistics (AT&L)
- Supervises the DoD's acquisition process, research and development; advanced technology; test and evaluation; production; logistics; military construction; procurement; economic security; and atomic energy.
- http://www.acq.osd.mil/