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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

RD 25| Exercise Concludes

U.S. Marines from across the III Marine Expeditionary Force trained alongside Japan Self-Defense Force personnel during exercise Resolute Dragon 25.

02

RD 25| 12th LCT Force on Force

U.S. Marine Corps Cpl. Tyler Pacheco, a rifleman with 12th Littoral Combat Team, maneuvers through wooded terrain during Resolute Dragon 25.

03

Resolute Dragon 25

U.S. Marine Corps Lt. Gen. Roger Turner and Lt. Gen. Seiji Toriumi shake hands to commemorate the opening ceremony of Resolute Dragon 25.

04

31st MEU | Loading HIMARS

U.S. Marines with Hotel Battery, 31st MEU, ready an M142 HIMARS during a loading exercise at Kadena Air Base, Okinawa, Japan, Aug 27, 2025.

05

MWSS 174 | Toxic Swell 25

U.S. Marine Corps PFC. Noah Carver with MWSS-174, scans an aircraft for contaminates during exercise Toxic Swell 25.

06

31st MEU | VMFA 242

U.S. Marine Corps F-35B Lightning II aircraft assigned to Marine Fighter Attack Squadron 242, fly over the USS America with 31st MEU.

 

Featured News

Remembering the fallen: Okinawa Marines participate in battle site tour
III Marine Expeditionary Force
April 1, 2016 | 0:58
Remembering the fallen: Okinawa Marines participate in battle site tour
III Marine Expeditionary Force
April 1, 2016 | 0:58
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Remembering the fallen: Okinawa Marines participate in battle site tour
Resolute Dragon 2025: U.S. Marines and Japan Self-Defense Force Steadfast Allies
RD25 | 1st. Lt. Andreja Petrulis Interview
U.S. Navy Lt. Hlatki interview during bilateral medical training during Resolute Dragon 25
RD25 | U.S. Marine Corps Lance Cpl. Michael Franklin Interview
RD25 | U.S. Marine Corps Sgt. Daniel Greenleaf Interview
3rd MLG, JGSDF conduct bilateral CBRN site exploitation training during Resolute Dragon 25
RD25 | SSgt Maresca Interview
RD25 | U.S. Marine Corps Lance Cpl. Joshua Liu Interview
RD 25 | U.S. Marine Corps Lt. Col. Jacob Godby Interview
RD 25 | III MEF and Western Army Commanding Generals Hold Press Conference B-Roll
RD 25 | U.S. Marine Corps 1stLt. Jacob Healy Interview
RD 25 | U.S. Marine Corps Capt. Michael Heifner Interview
RD 25 | U.S. Marine Corps Capt. Michael Heifner Interview
RD25 | Japan Ground Self-Defense Force Major Nakajima Interview
 
III Marine Expeditionary Force