Colonel Roger K. Griffin was commissioned an Officer in the Chemical Corps upon graduation from Officer Candidate School Class 04-83, 9 September 1983. His first duty assignment was as Battalion Chemical Officer, 3rd Battalion, 1st Special Forces Group (Airborne), Fort Lewis, Washington.

His subsequent duty assignments include: Detachment Commander, Operational Detachment-A 172, A Company, 3rd Battalion, 1st Special Forces Group (Airborne), Fort Lewis, Washington; Detachment Commander, 1st Special Operations Command-Europe; Support Center Director, 1st Special Operations Command-Europe; Chief, Special Operations Section, Special Management Branch and Personnel Distribution Manager, United States Total Army Personnel Command, Alexandria, Virginia; Army Strategist, Strategy Plans and Policy Directorate, Headquarters, Department of the Army, Pentagon, Washington, D.C.; Company Commander, A Company, 3rd Battalion, 1st Special Forces Group (Airborne), Fort Lewis, Washington; Battalion Executive Officer, 3rd Battalion, 1st Special Forces Group (Airborne), Fort Lewis, Washington; Group Operations Officer, 1st Special Forces Group (Airborne), Fort Lewis, Washington; Operations Officer, J-3 Special Operations Division, The Joint Staff, Pentagon, Washington, D.C.; Battalion Commander, 3rd Battalion, 1st Special Forces Group (Airborne), Fort Lewis, Washington and Operation ENDURING FREEDOM-Philippines; Special Operations Chair, Marine Corps University, Marine Corps Base Quantico, Virginia; Chief, Special Operations Division, G-3/5/7, Headquarters, Department of the Army, Pentagon, Washington, D.C.; Chief, Special Operations Group, United States Total Army Personnel Command, Alexandria, Virginia

Colonel Griffin’s military awards include: the Legion of Merit, the Defense Meritorious Service Medal (with Oak Leaf Cluster), Meritorious Service Medal (with Silver Oak Leaf Cluster), Army Commendation Medal, Army Achievement Medal, Army Good Conduct Medal, Army of Occupation Medal, National Defense Service Medal, Global War on Terrorism Expeditionary Medal, Global War on Terrorism Service Medal, Humanitarian Service Medal, Noncommissioned Officer Professional Development Ribbon, Overseas Service Medal, Meritorious Unit Commendation, and Philippine Presidential Unit Commendation.