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About

III MEF Logo
III MARINE EXPEDITIONARY FORCE
Okinawa, Japan

Leaders

Commanding General, III Marine Expeditionary Force

Lieutenant General Roger B. Turner

Lieutenant General Roger Turner assumed command of III Marine Expeditionary Force on 26 January 2024. ...

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Commanding General, 3D Marine Expeditionary Brigade

Brigadier General Ryan M. Hoyle

Brigadier General Ryan M. Hoyle graduated fromthe University of Oklahoma’s Naval Reserve OfficersTraining Corps program in 1996, earning a Bachelorof Science degree in Health and Sports Sciences, andwas commissioned that same year.He completed the Basic Officer Course,...

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SgtMaj Christopher J. Adams

SgtMaj Christopher J. Adams

Sergeant Major Adams is a native of Macon, Georgia. He enlisted in the Marine Corps in 1993 and attended recruit training at MCRD Parris Island, SC, 3rd Recruit Training Battalion. Upon completion, he attended the School of Infantry at Camp Geiger, for the MOS of 0311, Infantry Rifleman....

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Expand List item 12377Collapse List item 12377  Early Years

III MEF was established as I Marine Amphibious Corps on Oct. 1, 1942. It was renamed III Amphibious Corps, April 15, 1944, and contributed to noteworthy military campaigns, such as the Solomon Islands campaign, the Mariana and Palau Islands campaign, and the Battle of Okinawa, during World War II.

In September 1945, III AC redeployed to Tientsin, China, and supported the occupation of Northern China before being deactivated June 10, 1946.

III AC was reactivated on May 6, 1965 in Da NangRepublic of Vietnam, and redesignated III Marine Amphibious Force on May 7, 1965. III MAF, which consisted of 1st Marine Division3rd Marine Division and 1st Marine Aircraft Wing, operated in Quang TriThua ThienQuang NamQuang Tin, and Quang Ngai from May 1965 to April 1971 during the Vietnam War.

Expand List item 12378Collapse List item 12378  Current Role

III MAF was redesignated as III Marine Expeditionary Force on Feb. 5, 1988 and has since supported military operations throughout the world. In the Middle East, III MEF supported Operation Desert ShieldOperation Desert StormOperation Provide Comfort, Operation Iraqi Freedom and Operation Enduring Freedom. III MEF elements also played a vital role in Operation Sea Angel, in Bangladesh, from May-June 1991; Operation Fiery Vigil, in the Philippines, during June 1991; and Operation Restore Hope and Operation Continue Hope, in Somalia, from December 1992 to March 1994.

Today, III MEF supports a wide range of military operations, including humanitarian assistance and disaster relief. III MEF provided HADR assistance during Super Typhoon Megi in the Philippines during 2010; earthquake-relief efforts in Japan during March 2011; Operation Tomodachi, a tsunami-relief effort in Japan during May of the same year; flood-relief efforts in Thailand during October-November 2011; typhoon-relief efforts in the Philippines during December 2012 and November 2013; earthquake-relief efforts in Nepal during 2015 and in Kumamoto, Japan, in 2016.

III MEF, currently headquartered in Okinawa, Japan, maintains a forward presence in support of the Treaty of Mutual Cooperation and Security between the U.S. and Japan, and other regional allies of the U.S. III MEF also conducts combined operations and training throughout the region in support of the National Security Strategy for Theater Security Cooperation.

III MEF subordinate units include the 3rd Marine Division, 1st Marine Aircraft Wing, 3rd Marine Logistics Group, 3rd Marine Expeditionary Brigade, 31st Marine Expeditionary Unit and III Marine Expeditionary Force Information Group.

Expand List item 12379Collapse List item 12379  Campaigns
1942-1946

 Activated 1 October, 1942 at Camp Elliot, San Diego, CA as I Marine Amphibious Corps.
- Deployed October 1942 to Noumea, New Caledonia.
- Redesignated 15 April, 1944 as III Marine Amphibious Corps.
- Participated in the following WWII Campaigns:

  • Bougainville

  • Northern Solomans

  • Guam

  • Palaus

  • Okinawa

- Redeployed September 1945 to Tiestim, China.
- Participated in occupation of North China, September 1945 - June 1946.
Deactivated 10 June, 1946.

1965-1987

Reactivated 6 May, 1965 at Na Dang, Republic of Vietnam as III Marine Expeditionary Force.
- Redesignated 7 May, 1965 as III Marine Aphibious Force
- Participated in PWAR in Vietnam May 1965 - April 1971; Operating From:

  • Quang Tri

  • Thua Thien

  • Quang Nam

  • Quang Tin

  • Quang Ngai

Deployed April 1971, Camp Courtney, Okinawa

1988-2006

Redesignated 5 February, 1988 as III Marine Expeditionary Force.
- Elements participated in Operations in Southwest Asia and Iraq from September 1990 -  April 1991 and May-June 1991

  • Desert Shield

  • Desert Storm

  • Provide Comfort

- Elements participated in Operation Sea Angel, Bangladesh: May-June 1991
- Elements participated in Operation Fiery Vigil, Phillipines: June 1991
- Elements participated in Operation Restore Hope and Continue Hope, Somalia: December 1992 - March 1994
- Elements participated in Global War on Terrorism: 2001 - 2007
- Elements participated in Operation Unified Assistance in response to the Tsunami Disaster, Southeast Asia: December 2004 - February 2005

Innovation Challenge

 

III MEF is looking for creative ideas to hide commercial satellite internet terminals, especially Starlink/Starshield-type terminals.  

 

What can I submit?

Your submission should fall into one of the categories below. If you have an idea that contributes to reducing the signature of satellite terminals but does not fit neatly into one of these categories, submit it anyway. All ideas will be considered.

  • Terminal covers: Ideas in this category should be removable covers for terminals that allow them to blend into the environment. Any environment (urban, jungle, etc.) is acceptable, though keep in mind the possibility for terminals to overheat or for covers to retain water after it rains.
  • Camouflage objects: Ideas in this category should be fake objects, like rocks, air conditioners, etc. that terminals can be hidden inside and still operate. Ideas that involve mounting terminals on or in common objects are also of interest.
  • Mounting kits: Ideas in this category should allow terminals to be quickly attached to the exterior or interior of buildings and vehicles in a way that does not leave permanent traces.
  • Form factor improvements: Ideas in this category will allow terminals to be more easily deployed, such as ways to fit a standalone power, dish, and Wi-Fi router into one deployable casing. Power solutions that let terminals run off of 12-volt power are also desirable.
What can I win, and who’s eligible?

Successful entries may be awarded up to $5,000 from III MEF, with other awards possible depending on the value of the idea.

  • Submissions may come from anyone; however, cash awards will only be paid out to U.S. uniformed service members. Non-U.S. military members of teams may receive alternate awards.
  • You can submit multiple entries. Cash awards will be awarded on a per participant basis, though, not per entry. Other awards may be awarded per project.
  • Teams may be of any composition – government civilian employees, service members, contractors, dependents, etc. The team must identify a U.S. service member as the sponsor for possible award purposes.
  • This is a challenge, not necessarily a competition. Multiple ideas may receive an award.
How do I submit?

Email your entries to III_MEF_InnovationChallenge@usmc.mil no later than 2000 / 8:00 PM Japan Standard Time, 20 March 2026. You may update your challenge entry until the deadline, but please ensure that your first submission will stand alone as a valuable idea.

  • There is no specific format for submissions.
  • The more detail you provide, the better – a working prototype and details on how you made your design is going to be judged more favorably than a rough concept sketch alone.
  • Prototypes are strongly encouraged. Please include photos of your prototype in your submission, and we’ll contact you to arrange for picking it up for testing and returning it to you afterward.
  • If you work in teams, have one team member submit the idea and list all members in your email along with a rough breakdown of who did what, like “LtCol Puller: case design, Pvt Pyle: dish mount fabrication.”
  • If you spent money to produce a prototype, please include an itemized receipt of expenses. Reimbursement is not guaranteed, but may be considered in determining the amount of cash awards an idea receives to account for expenses.
How will my idea be evaluated?

A group of experts will assess your idea. All submissions will be considered on the following criteria:

  • Simplicity: How easy is it to transport the design, set it up, operate it, and remove it in real-world conditions?
  • Sourcing: How easy is it to get materials to make your idea? Can they all be found on Okinawa? Do they require special shipping or purchasing, or are the materials freely available in large quantities?
  • Manufacturing: How easy is it to produce your idea? Does it require specialized machining, specialist skills, or a long time to produce, or is it easily manufactured by anyone with the right materials and instructions?
  • Speed: How much does your idea impact the upload and download speed of the terminal using it? Prototypes will be tested against a normal terminal, both dry and after your design has been soaked in water.
  • Documentation: Did you provide a clear design that can be easily understood, and instructions on how to make it, along with an estimate of the materials required? How easy is your design for the average person to understand?
  • Creativity: Is your idea new, or is it an adaptation of an existing idea? Note that submissions that take an existing concept and improve it are still valuable.
  • Cost: All else being equal, cheaper designs are better.

No single criteria is more important than any other. A design that’s bad according to one criteria but outstanding in others is still worth submitting.

Winners will be announced no later than 20 April 2026.

 
III Marine Expeditionary Force