MRF-SEA 25 Deployment

Video by Sgt. Shaina Jupiter

Marine Rotational Force - Southeast Asia

May 9, 2025 | 2:35

U.S. Marines and Sailors with Marine Rotational Force-Southeast Asia, as a stand-in force, completing their Fiscal Year 2025 deployment and for the first time, completing a full six-month rotation. After compositing in July, 2024, MRF-SEA personnel completed exercises and operations in the Philippines, Indonesia, Malaysia, Brunei, Thailand, and Singapore, comprised with elements from I Marine Expeditionary Force such as 15th Marine Expeditionary Unit; 2nd Battalion, 7th Marine Regiment; 1st Light Armored Reconnaissance Battalion; and 1st Battalion, 5th Marine Regiment. MRF-SEA is a rotational unit derived from elements of I MEF executing a U.S. Marine Corps Forces, Pacific operational model that involves training events and exchanges with partner military subject matter experts, promotes security goals with allied and partner nations, and ensures a persistent I MEF stand-in presence west of the international date line. (U.S. Marine Corps video by Sgt. Shaina Jupiter)

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MRF-SEA 25 Deployment

Mission:
189th IN BDE (CATB) observes, coaches, and trains our ARNG and USAR partners to provide trained and ready units to support combatant commander requirements around the world. O/O, conduct Mobilization and Large Scale Mobilization Operations (LSMO) in support of our ARNG and USAR partners to meet combatant commander OPLAN requirements.
Vision:
Our purpose is to support First Army’s mission to achieve FORSCOM directed readiness and deliver trained and ready NG and RC forces. We accomplish this through partnership with the National Guard and US Army Reserve as FORSCOM’s proponent for the integration of the Army’s Total Force Policy (ATFP) and execution of Mobilization Training Centers (MTC) operations as part of the Army’s LSMO effort.

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