Director of the Marine Corps Staff (DMCS)

Office of the Director, Marine Corps Staff


Office of the Director, Marine Corps Staff

Headquarters Marine Corps

The Director of the Marine Corps Staff (DMCS) is the principal assistant and advisor to the Commandant and Assistant Commandant, and effectively and efficiently coordinates HQMC staff processes and actions.


  1. Complete this Form (Note: For best results, save this PDF and open it in Adobe Acrobat. Click the "Enable All Features" button.)
  2. Send Form to Pentagon Force Protection Agency at and copy to HQMC Operations Center Watch Officer at
    • In the Subject line, include “FOUO CONTAINS PII”
    • Under ‘Options’, click on ‘Request a Delivery Receipt’ and ‘Encrypt’
    • If unable to send an encrypted e-mail to the above email address, please send the DD Form 3112 via DoD Safe (CAC-enabled site).  Once in DoD SAFE, choose “Drop-Off” and also check the box next to “Encrypt every file” before sending the form.  Create a passphrase and provide that passphrase to the recipient in a separate e-mail.
    • Hit 'Send'
  3. Notify your leadership
  4. Enact appropriate distributed workforce and quarantine actions
  5. A PFPA representative will respond immediately with further instructions to include Cleaning options and CDC guidance
For additional information or assistance, contact AR Division’s Facilities and Space Management Section
Cell: (703) 955-1454  Office DL: (703) 692-5151  Office Comm: (703) 693-3089
For additional guidance, click "Here"
For guidance on distributive workforce and quarantine action, click "Here"
Staff Director, Marine Corps, HQMC

Gregg P. Olson is the Staff Director of the Marine Corps.  He grew up in Cumberland, RI, Montreal, Quebec, and Westlake Village, CA, and graduated from the United States Naval Academy in 1985.

An infantry officer, MajGen Olson has an additional Military Occupational Specialty as an embarkation officer.

MajGen Olson commanded a rifle company in 2nd Battalion, 1st Marines, and both Headquarters & Service and Weapons Companies in 3d Battalion, 2nd Marines. He commanded 2nd Battalion, 1st Marines during combat in Fallujah in 2004, and the 11th Marine Expeditionary Unit during its 2010 deployment.

His staff assignments include S-3 Operations Officer for 3d Battalion, 2nd Marines during Operation SEA SIGNAL (1995), S-3 Operations Officer for 15th Marine Expeditionary Unit (Special Operations Capable) during combat operations in Afghanistan (2001) and Iraq (2003), and service as G-3 Operations Officer for 1st Marine Division.

MajGen Olson’s supporting establishment assignments include staff and ceremonial duties at Marine Barracks, Washington, D.C., Faculty Advisor at Amphibious Warfare School, and Director for Senate Liaison, Office of Legislative Affairs, Headquarters, Marine Corps.

His field grade Joint assignment was as the Assistant Deputy Director for Regional Operations (J-33), J-3, Joint Staff. During that tour, he qualified as a Deputy Director for Operations (DDO) in the National Military Command Center.

As a general officer, MajGen Olson was assigned as Deputy Commander, U.S. Marine Corps Forces, Central Command/Commanding General, Marine Corps Forces, Central Command (Forward), Manama, Bahrain. During that tour, he was additionally designated as Commander, Task Force 51/59, Fifth Fleet, U.S Naval Forces, Central Command.

His Headquarters, Marine Corps service as a general officer includes duties as Director of the Marine Corps’ 2016 Quadrennial Defense Review Office and a 2019-2020 assignment as Assistant Deputy Commandant for Plans, Policies, and Operations.

His Joint service as a general officer includes assignment as the Joint Staff’s J-5 Deputy Director for Political-Military Affairs, Middle East (DDME), and a tour as the Director of Operations and Cyber, United States Africa Command, Stuttgart, Germany.

Major General Olson is a graduate of the Amphibious Warfare School, Marine Aviation Weapons and Tactics Squadron One Weapons and Tactics Instructor Course, the College of Naval Command and Staff, and the National War College.

He is married to a former Navy Nurse Corps officer.