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A Marine Expeditionary Force or MEF (formerly known as a Marine Amphibious Force) is the largest type of a Marine Air-Ground Task Force. A MEF is the largest building block of United States Marine Corps combat power.


An MEF is larger than a Marine Expeditionary Unit (MEU) or Marine Expeditionary Brigade (MEB).

Each MEF consists of a division as the ground combat element, an aircraft wing as the aviation combat element, and a logistics group as the logistics combat element.

The MEF also contains a Special Operations Training Group (SOTG) and is the training section component for the MEU and MEB. The SOTG oversees the training and evaluation exercises for the MEU's annual Special Operations Capable Certification.


A MEF also commands several smaller MAGTFs, including MEBs and MEUs.

List of MEFs

I Marine Expeditionary Force

Camp Pendleton, California
Insignia Name Location
1st MARDIV 2 insignia.png
1st Marine Division
Camp Pendleton, California
3MAW embossed.png
3rd Marine Aircraft Wing
Marine Corps Air Station Miramar, California
1stMLG insignia.png
1st Marine Logistics Group
Camp Pendleton, California
No image.png
1st Marine Expeditionary Brigade
Camp Pendleton, California
11th Marine Expeditionary Unit
Camp Pendleton, California
13th Marine Expeditionary Unit
Camp Pendleton, California
15th Marine Expeditionary Unit
Camp Pendleton, California

II Marine Expeditionary Force

II MEF insignia.jpg
Camp Lejeune, North Carolina
Insignia Name Location
2nd Mar Div;divlogo1.gif
2nd Marine Division
Camp Lejeune, North Carolina
USMC - 2MAW.png
2nd Marine Aircraft Wing
Marine Corps Air Station Cherry Point, North Carolina
2nd Marine Logistics Group
Camp Lejeune, North Carolina
2nd MEB insignia.jpg
2nd Marine Expeditionary Brigade
Camp Lejeune, North Carolina
22nd Marine Expeditionary Unit
Camp Lejeune, North Carolina
24th Marine Expeditionary Unit
Camp Lejeune, North Carolina
26th Marine Expeditionary Unit
Camp Lejeune, North Carolina

III Marine Expeditionary Force

Camp Butler, Okinawa, Japan
Insignia Name Location
3rd Marine Division
Camp Courtney, Okinawa
USMC - 1MAW.png
1st Marine Aircraft Wing
Camp Foster, Okinawa
3rd Marine Logistics Group
Camp Kinser, Okinawa
3rd Marine Expeditionary Brigade
Camp Butler, Okinawa
31st Marine Expeditionary Unit
Camp Hansen, Okinawa

Marine Forces Reserve

New Orleans, Louisiana
Insignia Name Location
4th Marine Division
New Orleans, Louisiana
USMC - 4MAW.png
4th Marine Aircraft Wing
New Orleans, Louisiana
USMC 4th MLG vector.svg
4th Marine Logistics Group
New Orleans, Louisiana

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