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III MEF is the nucleus of a joint and coalition Stand-In Force within the First Island Chain. In competition, III MEF assures and expands access for the joint force across the Indo-Pacific. In crisis, it provides in-place response forces to secure allies and partners while deterring adversary aggression. In conflict, III MEF fights from advanced naval bases as part of a naval expeditionary force and enables Joint Force objectives in the Indo-Pacific.
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U.S. Marines provide security during a simulated visit, board, search and seizure raid onboard the USS San Diego in the Philippine Sea.
U.S. Marine Corps Cpl. Agustin Bautista-Rodriguez clears Lt. Col. Adam Perlin for takeoff during the Aviation Training Relocation Program at Tinian.
U.S. Marine Corps MV-22B Ospreys prepare to land during the Marine Corps Combat Readiness Evaluation at Marine Corps Air Station Kaneohe Bay, Hawaii
U.S. Marines detonate an explosive charge during an urban breaching range on Camp Hansen, Okinawa, Japan, Jan. 7, 2025.
U.S. Navy Hospital Corpsman Keegan Farnsworth maneuvers through the endurance course at the Jungle Warfare Training Center, Okinawa, Japan.
U.S. Marines move to an assault position during exercise Korea Viper 25.1 at Camp Rodriguez, South Korea, Dec. 18, 2024.
Brigadier General Kevin Collins, the commanding general of 3rd Marine Logistics Group, completed today a multinational visit of U.S., Japan Ground Self-Defense Force, and Republic of Korea self-defense and military commands ahead of scheduled bilateral exercises in Japan and Korea, Jan. 27 through Feb. 4, 2025.
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U.S. Marines with the 31st Marine Expeditionary Unit (MEU) embarked aboard ships of the America Amphibious Ready Group (ARG), Jan. 28, campaigning and competing in the Indo-Pacific region.
As the calendar turns to 2025, the Marines, Sailors, and joint force enablers of III Marine Expeditionary Force are poised to build on the successes of 2024, a year marked by significant milestones and advancements in regional security. Through a robust series of exercises, training events, and community engagements, III MEF deepened relationships with regional partners and allies, reinforcing shared values of mutual respect, trust, and cooperation.
Amphibious Combat Vehicles with 4th Marine Regiment, 3d Marine Division, completed the first open-water amphibious movement in the Kushi Crossing, Dec. 10, 2024.