Lt. Col. Ian O’Sullivan

Deputy Commander for Mega Projects

U.S. Army Corps of Engineers Galveston District
Published Dec. 18, 2023

Lt. Col. Ian P. O’Sullivan serves as the U.S. Army Corps of Engineers (USACE) Galveston District’s Deputy Commander for Mega Projects. He assists the district commander in overseeing an area of responsibility spanning the Texas coast from Louisiana to Mexico, encompassing 50,000 square miles, 48 counties, two parishes, and 16 Congressional districts. O’Sullivan is responsible for executing the Galveston District’s mission of providing public engineering services to strengthen security along the Texas coast, energize the local economy, and reduce risks from disasters within the Sabine Pass to Galveston Bay project and the Coastal Texas Protection and Restoration Project.

O’Sullivan’s previous assignments include: platoon leader and executive officer of Easy Company, 2-12 Cavalry Battalion, 1st Cavalry Division at Fort Hood, Texas, where he deployed in support of Operation Iraqi Freedom. He also served as battalion operations officer of the 30th Engineer Battalion, and commander of the 618th Engineer Support Company (Airborne) under the 307th Engineer Battalion at Fort Bragg, North Carolina, where he deployed in support of Operation Enduring Freedom.

After company command, O’Sullivan was assigned as the engineer captains assignment officer at Human Resources Command in Fort Knox, Kentucky. There, he was responsible for career management of the Engineer Regiment’s captains. He then assumed duties as the Executive Officer to the Deputy Commanding General for Civil and Emergency Operations (DCG-CEO) at USACE Headquarters in Washington, D.C. In this capacity, O’Sullivan supported the DCG in the execution of his duties as the senior officer responsible for USACE Civil Works and Emergency Operations programs.

Following his time in Washington D.C., O’Sullivan was assigned to Joint Base Elmendorf-Richardson with the 4th Brigade, 25th Infantry Division (Airborne). He served as the current operations chief for the brigade and as the battalion executive officer for the 6th Brigade Engineer Battalion (Airborne). He was then selected as the brigade executive officer for the Arctic Support Command (Provisional) where he served prior to his assignment at the Galveston District. He was originally assigned as the Deputy Commander for the District prior to assuming duties as the Deputy Commander for Mega Projects.

O’Sullivan was commissioned in the U.S. Army in May 2006. He earned a Bachelor of Science in Geospatial Information Science from the United States Military Academy and a Master of Science in Geological Engineering from the Missouri University of Science and Technology. O’Sullivan is a graduate of the U.S. Army Command and General Staff College as well as the Engineer Officer Captains Career Course and Basic Course.

His military awards and decorations include: the Bronze Star Medal, Meritorious Service Medal (4), Army Commendation Medal (2), Army Achievement Medal, Afghanistan Campaign Medal, Iraq Campaign Medal, Combat Action Badge, Air Assault Badge, Senior Parachutist Badge, Sapper Tab, and the Bronze Order of the DeFleury Medal.