An official website of the United States government
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.


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

COMMSTRAT FTX | 12K HIKE

A U.S. Marine with 3rd Marine Division conducts a hike during the COMMSTRAT Field Training Exercise at Camp Hansen, Okinawa, Japan, April 8, 2026.

02

KMEP 26.1 | Platoon Attacks

Republic of Korea Marine Corps tanks fire after rehearsing squad attacks during the Korean Marine Exchange Program 26.1

03

VMFA-242 | Flight Operations

U.S. Marines with 1st Marine Aircraft Wing, performs a pre-flight inspection on an F-35B at Marine Corps Air Station Iwakuni, Yamaguchi, Japan

04

U.S. Marines & JGSDF Landing

U.S. Marines and Japan Ground Self-Defense Force members conduct a beach landing during exercise Iron Fist 26 in Tanegashima, Japan, March 2, 2026.

05

Marines, Rangers & Berets

U.S. Marines, Rangers, and Berets deploy from a KC-130J Super Hercules aircraft during a simulated raid on Ie Shima, Okinawa, Japan, Feb. 19, 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

Force Reconnaissance Company Silent Jungle Patrol
III Marine Expeditionary Force
Aug. 4, 2025 | 0:48
Force Reconnaissance Company Silent Jungle Patrol
III Marine Expeditionary Force
Aug. 4, 2025 | 0:48
Player Embed Code:
Download
Tags
More
Force Reconnaissance Company Silent Jungle Patrol
HMLA-169 supports 3rd Recon Bn. helocast training
3d Recon CATC Fuji Parachute Operations
3d Recon Parachute Operations
Always Beside You
3d Reconnaissance Parachute Operations
3d Recon Recruiting Video
3d Reconnaissance Battalion Change of Command
3d Reconnaissance Battalion Conducts Deliberate Water Parachute Operations
Cobra Gold 2022: Jungle Survival Training
From air to sea
Desert Eagle
Force Recon Conducts Room Clearing Drills
Force Reconnaissance: Special Patrol Insertion and Extraction Rigging Drills
Amongst the grass
 
III Marine Expeditionary Force