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Who we are

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.

 

 

01

3D MARDIV | Drone Operators

A Marine flys a Neros Archer first-person view drone on Camp Schwab, Okinawa, Japan, May 22, 2026.

02

ARTP | Camp Fuji

Marines pose for a group photo during Artillery Relocation Training Program 26.1 at the Combined Arms Training Center, Camp Fuji, Japan, May 25, 2026.

03

Kaiju Rain 26 | Surveillance

Lance Cpl. Jorryn Tutu, an intelligence surveillance and reconnaissance systems engineer sets a satellite Camp Hansen, Okinawa, Japan, May 20, 2026.

04

CATC Fuji | HIMARS

Marines load a rocket pod onto a HIMARS to conduct live fire missions during a live fire training event. Camp Fuji, Japan, May 20, 2026.

05

Marines maintain CH-53E

A U.S. Marine inspects a CH-53E Super Stallion helicopter during routine maintenance at Marine Corps Air Station Futenma, Okinawa, Japan

06

Opportunity in the Indo-Pacific

U.S. Marines with III MEF share their perspectives on the professional, personal, and family benefits of serving in the Indo-Pacific.

 

Featured News

U.S. Marines gain ground with non-lethal weapons
III MEF Information Group
Jan. 16, 2019 | 2:24
U.S. Marines gain ground with non-lethal weapons
III MEF Information Group
Jan. 16, 2019 | 2:24
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U.S. Marines gain ground with non-lethal weapons
Patrol, detain, and escort: Law Enforcement Marines simulate hostage handling
JWTC: A Different Beast
A Marine's Best Friend
California native gives Mother's Day shout out
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Lance Cpl. Andrew Hartley
Marines Conduct Crime Investigation Exercise
Every Dog Has Its Day - Episode 1
Every Dog Has Its Day - Episode 2
Every Dog Has It's Day - Full Series
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Dogs in a Trap
3rd LE Bn. Fast-Rope With Dogs
 
III Marine Expeditionary Force