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III MARINE EXPEDITIONARY FORCE

III MEF Logo
FORWARD. FAITHFUL. FOCUSED.
Okinawa, Japan

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

Short-Bay Live-Fire

U.S. Marine Corps engages targets during a short-bay live-fire range at Camp Hansen, Okinawa, Japan, June 11, 2026.

02

3D MARDIV | Drone Operators

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

03

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.

04

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.

05

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.

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

1st Marine Aircraft Wing 80th Anniversary
1st Marine Aircraft Wing
July 1, 2021 | 3:38
1st Marine Aircraft Wing 80th Anniversary
1st Marine Aircraft Wing
July 1, 2021 | 3:38
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1st Marine Aircraft Wing 80th Anniversary
31st MEU Patrol Recap
It’s A Bird,  It’s A Plane, It’s A HIMARS? | Marines with 3rd TSB conduct HST operations
HMLA-169 Provides Close Air Support During SLTE 1-21
Marine Light Attack Helicopter Squadron 367
U.S. Marine and Navy helicopters exercise maritime strike capability
Marines and Sailors refuel aircraft aboard USS America
Underwater Egress Training
VMFA-121 at Singapore Airshow 2020
31st MEU Exercise
31st MEU NCOs tour Okinawa battle sites
Chaplains PT
Tiger TRIUMPH Opening Ceremony Video
Island Hopping
Relief in Place
 
III Marine Expeditionary Force