Videos

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)

U.S. Marines with Marine Rotational Force-Southeast Asia, I Marine Expeditionary Force, conduct a a humanitarian aid and disaster relief mission and Exercises Sama Sama, KAMANDAG 8, Keris MAREX, Valiant Mark 24 and 25, Cooperation Afloat Readiness and Training Malaysia and Brunei, and Cobra Gold throughout various countries in Southeast Asia. MRF-SEA traveled to the Philippines, Indonesia, Singapore, Malaysia, Brunei, Thailand and Singapore throughout the deployment. 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. Valiant Mark 25 is the 27th iteration of the exercise. (U.S. Marine Corps video by Sgt. Shaina Jupiter)

U.S. Marines with 1st Battalion, 5th Marine Regiment, 1st Marine Division, attached to Marine Rotational Force-Southeast Asia, alongside Singapore Guardsmen with 3rd Battalion Singapore Guards, 7th Singapore Infantry Brigade, conduct Valiant Mark 25 at Bedok Camp, Murai Urban Training Facility and SAFTI City Training Facility, Singapore, March 17-26, 2025. SAFTI City, the premier urban training facility in Southeast Asia, is one of the largest and most technologically advanced facilities of its kind in the world. U.S. Marines with MRF-SEA was the first foreign partner force to train at the facility during Valiant Mark 25. Valiant Mark is an annual, bilateral training exercise designed to enhance interoperability, build mutual defense capabilities, and strengthen military-to-military relationships between the U.S. Marine Corps and Singapore Armed Forces. 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. Valiant Mark 25 is the 27th iteration of the exercise. (U.S. Marine Corps video by Sgt. Shaina Jupiter)

U.S. Marines with Marine Rotational Force-Southeast Asia, I Marine Expeditionary Force, alongside Singapore Guardsman with 3rd Battalion Singapore Guards, 7th Singapore Infantry Brigade, share information during Valiant Mark 2025, Singapore, March 26, 2025. Valiant Mark is an annual, bilateral training exercise designed to enhance interoperability, build mutual defense capabilities, and strengthen military-to-military relationships between the U.S. Marine Corps and Singapore Armed Forces. 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. Christian Tofteroo)

U.S. Marines with 1st Battalion, 5th Marine Regiment, 1st Marine Division, attached to Marine Rotational Force-Southeast Asia, alongside Singapore Guardsmen with 3rd Battalion Singapore Guards, 7th Singapore Infantry Brigade, conduct the field training exercise for Valiant Mark 25 at SAFTI City Training Facility, Singapore, March 26, 2025. SAFTI City, the premier urban training facility in Southeast Asia, is one of the largest and most technologically advanced facilities of its kind in the world. U.S. Marines with MRF-SEA was the first foreign partner force to train at the facility during Valiant Mark 25. Valiant Mark is an annual, bilateral training exercise designed to enhance interoperability, build mutual defense capabilities, and strengthen military-to-military relationships between the U.S. Marine Corps and Singapore Armed Forces. 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 Cpl. Logan A. Courtright)

U.S. Marine Corps Sgt. Shaina Jupiter interviews U.S. Marines with 1st Battalion, 5th Marine Regiment, attached to Marine Rotational Force-Southeast Asia, and a Singapore Guardsman for “Meet Your MRF-SEA” during Valiant Mark 25 at Nee Soon Camp, Singapore, March 21, 2024. “Meet Your MRF-SEA” is a social media product highlighting service members a part of Marine Rotational Force-Southeast Asia. Valiant Mark is an annual, bilateral training exercise designed to enhance interoperability, build mutual defense capabilities, and strengthen military-to-military relationships between the U.S. Marine Corps and Singapore Armed Forces. 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)

U.S. Marines with 1st Battalion, 5th Marine Regiment, 1st Marine Division, attached to Marine Rotational Force-Southeast Asia, alongside Singapore Guardsmen with 3rd Singapore Guards, 7th Singapore Infantry Brigade, demonstrate military operations in urban terrain and conduct a blank-fire raid rehearsal during Valiant Mark 25 at Murai Urban Training Facility, Singapore, March 19, 2025. Valiant Mark is an annual, bilateral training exercise designed to enhance interoperability, build mutual defense capabilities, and strengthen military-to-military relationships between the U.S. Marine Corps and Singapore Armed Forces. 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 Cpl. Tyler Wilson and Cpl. Logan A. Courtright)

Cobra Gold 2025 showcased Marine Rotational Force-Southeast Asia's extensive capabilities in tactical and operational planning, command and control, and versatility as a strategic I Marine Expeditionary Force within Southeast Asia. Cobra Gold is the largest joint and combined exercise in mainland Asia, held annually in Thailand, showcasing the U.S. commitment to the region by building interoperability, multilateral cooperative arrangements, and advancing common interests through our commitment to allies and partners in ensuring a free and open Indo-Pacific. 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. Christian Tofteroo)

Service members with the Royal Thai Marine Corps and U.S. Marines with Marine Rotational Force-Southeast Asia, conduct Exercise Cobra Gold 2025 on Royal Thai Marine Corps Base Camp Jessada, Sattahip, Thailand, Feb. 25- March 7, 2025. Cobra Gold is the largest joint and combined exercise in mainland Asia, held annually in Thailand, showcasing the U.S. commitment to the region by building interoperability, multilateral cooperative arrangements, and advancing common interests through our commitment to Allies and partners in ensuring a free and open Indo-Pacific. 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 i nternational date line. (U.S. Marine Corps photos by Cpl. Tyler Wilson) 

U.S. Marine Corps Sgt. Christian Tofteroo and Sgt. Shaina Jupiter interview U.S. Marines with 1st Light Armored Reconnaissance Battalion, attached to Marine Rotational Force-Southeast Asia, and a Royal Thai Marine during Exercise Cobra Gold 2025 in Ban Chen Khrem, Thailand, March 3, 2025. “Meet Your MRF-SEA” is a social media product highlighting service members a part of Marine Rotational Force-Southeast Asia. MRF-SEA is a rotational unit derived from elements of I Marine Expeditionary Force 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 presence west of the International Date Line. (U.S. Marine Corps video by Sgt. Shaina Jupiter)

U.S. Marines with 1st Light Armored Reconnaissance Battalion, attached to Marine Rotational Force-Southeast Asia, alongside service members with the Royal Thai Marine Corps and Republic of Korea Marines, participate in a combat marksmanship range in Sattahip, Thailand Feb. 28, 2025, during Exercise Cobra Gold 2025. Cobra Gold is the largest joint and combined exercise in mainland Asia, held annually in Thailand, showcasing the U.S. commitment to the region by building interoperability, multilateral cooperative arrangements, and advancing common interests through our commitment to allies and partners in ensuring a free and open Indo-Pacific. 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 photo by Sgt. Christian Tofteroo)

U.S. Marines with Marine Rotational Force-Southeast Asia, Royal Thai Armed Forces personnel, and service members from Indonesia, Japan, Malaysia, and South Korea conduct a noncombatant evacuation operations demonstration in Korat, Thailand Feb. 27, 2025, during Exercise Cobra Gold 2025. NEO is a capability primarily executed by the U.S. Marine Corps to safely evacuate U.S. citizens and designated personnel from dangerous environments. Cobra Gold is the largest joint and combined exercise in mainland Asia, held annually in Thailand, showcasing the U.S. commitment to the region by building interoperability, multilateral cooperative arrangements, and advancing common interests through our commitment to allies and partners in ensuring a free and open Indo-Pacific. 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 photo by Sgt. Shaina Jupiter)

Royal Thai Armed Forces service members demonstrate jungle survival skills to U.S. Marines and sailors with the 1st Light Armored Reconnaissance Battalion, 1st Marine Division, attached to Marine Rotational Force-Southeast Asia, during a jungle survival class at Recon Camp, Sattahip, Thailand, Feb. 26, 2025, as part of Exercise Cobra Gold. Cobra Gold is the largest joint and combined exercise in mainland Asia, held annually in Thailand, showcasing the U.S. commitment to the region by building interoperability, multilateral cooperative arrangements, and advancing common interests through a commitment to allies and partners in ensuring a free and open Indo-Pacific. 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 Cpl. Migel A. Reynosa)

Royal Thai Armed Forces service members teach a jungle survival class to U.S. Marines and sailors with the 1st Light Armored Reconnaissance Battalion, 1st Marine Division, attached to Marine Rotational Force-Southeast Asia, at Recon Camp, Sattahip, Thailand, Feb. 26, 2025, during Exercise Cobra Gold 2025. Cobra Gold is the largest joint and combined exercise in mainland Asia, held annually in Thailand, showcasing the U.S. commitment to the region by building interoperability, multilateral cooperative arrangements, and advancing common interests through our commitment to allies and partners in ensuring a free and open Indo-Pacific. 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. Christian Tofteroo and Cpl. Tyler Wilson)