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Colonel Williamson graduated from The Citadel in 1989 and was commissioned in December of that same year via the Officer Candidate Class program. Upon completion of The Basic School and the Field Artillery Officer Basic Course in January 1991, he reported to 3rd Battalion, 10th Marines where he served as a Forward Observer, Fire Direction Officer, and Executive Officer with Battery L, and as the Fire Direction Officer for 10th Marine Regiment.
In July 1994, Colonel Williamson reported to Parris Island, South Carolina, where he held the billets of Series Commander, Executive Officer, and Commanding Officer with Company G, 2nd Recruit Training Battalion.
In October 1997, he checked aboard 5th Battalion, 10th Marines and assumed command of Battery T, 5th Battalion, 10th Marines. Returning from a Unit Deployment Program rotation to Okinawa, Japan, Colonel Williamson assumed duties as the battalion’s Logistics Officer and subsequently as the Operations Officer.
In July 2004, Colonel Williamson reported to Headquarters Marine Corps (HQMC) for duty with the Strategic Initiatives Group. During this tour, he received orders to Iraq where he led an Advisor Support Team with the 5th Battalion of the new Iraqi Army. Returning to HQMC in January 2005, he served as a staff writer and Director of the Commandant’s Staff Group.
He assumed command of 3d Battalion, 12th Marines in June 2006. During this command tenure, Colonel Williamson deployed to Afghanistan as the OIC of Embedded Training Team 6-2 and served as the Acting Commanding Officer of 12th Marine Regiment.
Colonel Williamson is presently assigned as the Senior Military Assistant to the Deputy Under Secretary of the Navy for Plans, Policy, Oversight, and Integration.
Colonel Williamson is a graduate of the Field Artillery Officer Advanced Course, the Marine Corps Command and Staff College, the School of Advanced Warfighting, and the Industrial College of the Armed Forces. He is also alumnus of the Massachusetts Institute of Technology Seminar XXI program and was assigned to the Marine Corps’ Strategic Studies Group for the 2001 Quadrennial Defense Review. |