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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

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

The Littoral Advance
3d Marine Division
April 21, 2022 | 2:07
The Littoral Advance
3d Marine Division
April 21, 2022 | 2:07
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The Littoral Advance
1st MAW WTI Primer Operation
Northern Apache, Expeditionary Advance Base Operations exercise
MAG-24 Flight of the Eagles, Airborne Change of Command
VMGR-152 air-to-air refueling during trans-Pacific flight
Northern Viper 2017 comes to an end
National Aviation Day 2017
In the mind of a Marine scout sniper
No Marine Left Behind: An Osprey, an Air Force rescue crew, and the Marines they saved in Okinawa
No Marine Left Behind: An Osprey, an Air Force rescue crew, and the Marines they saved in Okinawa (CLEAN)
Valiant Shield 16: Trinity Marines Take Tinian
Lava Dog Marines Conduct Long Range Raid
Marines Helocast During Cobra Gold
Air, Ground Warriors Perfect MAGTF Ops During Blue Chromite
MV-22 Osprey Pilotscarrier Obtain Qualification  In Conjunction With Blue Chromite
 
III Marine Expeditionary Force