Official biography
col gary reidenbach

Col. Gary R. Reidenbach, U.S. Marine Corps

Commandant of the Marine Corps Chair
Director (Incoming), Program on Terrorism and Security Studies
College of International and Security Studies
George C. Marshall European Center for Security Studies 

Col. Gary R. Reidenbach is the Commandant of the Marine Corps Chair and Director of the Program on Terrorism and Security Studies at the College of International and Security Studies at the George C. Marshall European Center for Security Studies.

His previous assignment was as the Marine Aide/Military Assistant (MA) to the Assistant Secretary of the Navy (Manpower and Reserve Affairs). 

He was commissioned a Marine Corps Second Lieutenant in December 1994 through the Officer Candidate Course program.  After completion of The Basic School and the Combat Engineer Officer Course in 1995, he was assigned to 3d Marines in Hawaii until 1998.  During this tour, he served as the Combat Engineer Platoon Commander, Combat Assault Platoon Commander, and the Combat Assault Company Executive Officer.

First Lt. Reidenbach transferred to the Joint Unexploded Ordnance Coordination Office at Fort Belvoir, Virginia, in 1998 to act as the USMC liaison and Countermine action officer for coordinating joint research and development requirements and solutions across the countermine, humanitarian demining, explosive ordnance disposal, active range clearance, and environmental remediation fields.  He was promoted to Captain in 2002 and attended the U.S. Army’s Engineer Captains Career Course at Fort Leonard Wood, Missouri.

Capt. Reidenbach was then assigned to 8th Engineer Support Battalion (ESB), Camp Lejeune, North Carolina, and deployed in support of Operation IRAQI FREEDOM.  For OIF I, he served on the battalion staff before assuming command of Bridge Company Alpha in al-Kut, Iraq.  After returning to Camp Lejeune, he assumed command of Engineer Support Company.  Following promotion to Major in late 2004, he was assigned as the Current Operations Officer for 2d Marine Logistics Group (Fwd) and deployed in support of OIF 04-06.  He re-joined 8th ESB at Camp Taqaddum, Iraq, to assume duty as the Battalion Operations Officer for the second half of the OIF 04-06 rotation.

From 2006-2009, Major Reidenbach served as a Strategic Arms Reduction Treaty (START) monitor with the Defense Threat Reduction Agency at Fort Belvoir, Virginia.  He acted as a Deputy Site Commander and Site Commander at the Votkinsk Portal Monitoring Facility in Votkinsk, Russia, where he inspected Russian intercontinental ballistic missiles subject to the treaty and ensured U.S. treaty rights and obligations were fully met and honored.

Upon completion of his tour with DTRA, Major Reidenbach was assigned to the Marine Forces Pacific (MARFORPAC) Engineer branch from 2009-2012 where he served as the Force Engineer Officer and the Exercise Related Construction (ERC) officer.  As the ERC officer, he identified and designed construction projects throughout the Pacific theater to meet US Pacific Command and MARFORPAC operational and exercise infrastructure requirements.  During this tour he was promoted to Lieutenant Colonel.  In August 2012, Lieutenant Colonel Reidenbach was assigned as the Engineer branch head at the Logistics Integration Division in the Capabilities Development Directorate at Quantico, Virginia.  He remained at this assignment until May 2013 when he transferred to Okinawa, Japan, to assume command of 9th Engineer Support Battalion in 3d Marine Logistics Group, III Marine Expeditionary Force. 

From June 2013 to June 2015, Lieutenant Colonel Reidenbach was the Commanding Officer of 9th ESB and led his unit in support of numerous Marine/Joint/Combined exercises and training evolutions, Theater Security Cooperation activities, Engineer Civic Action Programs, humanitarian demining support rotations, Defense POW/MIA Accounting Agency missions, humanitarian relief efforts, and 31st Marine Expeditionary Unit rotations.  Following typhoon Haiyan’s landfall in the Philippines in 2013, he concurrently acted as the Joint Task Force-505 J9 Assessments engineer for Operation DAMAYAN humanitarian relief efforts. 

Following command, Lieutenant Colonel Reidenbach attended the U.S. Army War College at Carlisle Barracks, Pennsylvania, earning a Master of Strategic Studies degree in June 2016.  He then transferred to Headquarters Marine Corps (HQMC) Deputy Commandant Plans, Policies, and Operations (PP&O) for duty as the Ground Combat Element (GCE) Branch’s Combat Engineer proponent. 

Colonel Reidenbach’s personal awards include the Legion of Merit, Bronze Star Medal, Defense Meritorious Service Medal, Meritorious Service Medal, Joint Service Commendation Medal, Navy and Marine Corps Achievement Medal, and the Army Achievement Medal.