Combat Logistics Battalion 31
CLB-31 Unit Logo
31st Marine Expeditionary Unit


31st MEU EOD technicians practice IED sweep

CWO2 Samuel Beltram, an Explosive Ordnance Disposal officer with Combat Logistics Battalion 31, 31st Marine Expeditionary Unit, adjusts his helmet as...


CLB-31 Marines refine noncombatant evacuation capabilities during CERTEX

Lt. Col. Siebrand H. Niewenhous IV, the commanding officer of Combat Logistics Battalion 31, talks to Capt. Michael R. Trumm, a logistics officer...


31st MEU Marines and Sailors participate in mass casualty response training

Marines and Sailors with Combat Logistics Battalion 31 treat a mock casualty during mass casualty response training as part of Amphibious Integration...


CLB-31 External Lift Training

A U.S. Marine Corps CH-53E Super Stallion hovers over a landing zone with a cement block during an external lift drill with Marines from Combat...


31st MEU Marines conduct HA/DR training for AIT

Marines with Combat Logistics Battalion 31 and Battalion Landing Team, 3rd Battalion, 5th Marines, land at Freshwater Beach, Shoalwater Bay Training...


31st MEU Marines conduct HA/DR training for AIT

Capt. Michael R. Trumm, a logistics officer with Combat Logistics Battalion 31, gives directions to fellow Marines during a humanitarian...


CLB-31 Marines rehearse noncombatant evacuation operations

Lance Cpl. Curtis D. Patton, a motor transportation operator, guides evacuee role players through an evacuation control center during noncombatant...


CLB-31 Marines refine HADR capabilities during CERTEX

Pfc. Quiendarius J. Salters, a landing support specialist with Combat Logistics Battalion 31, jumps from a 7-ton truck after a dusty drive during...


Taser, Taser, Taser, 31st MEU Marines, Sailors learn nonlethal weapons tactics

Staff Sgt. George Bruce, a nonlethal weapons instructor and corrections officer with Combat Logistics Battalion 31, fires an X26E Taser during...


CLB-31 Marines refine noncombatant evacuation capabilities during CERTEX

Navy Lt. Phillip Scarborough, a chaplain with Combat Logistics Battalion 31, speaks with evacuee role players during a noncombatant evacuation...

Combat Logistics Battalion 31 (CLB 31) is the logistics combat element of the 31st Marine Expeditionary Unit, the only continuously forward-deployed MEU in the Marine Corps. As the logistics combat element, the CLB provides all elements of the MEU with combat service support. To do this, the CLB comprises of a Headquarters, a Motor Transport Platoon, Engineer Platoon, Maintenance Platoon, Supply Platoon, Military Police Platoon, Landing Support Platoon, Communications Platoon and its Health Service Support (Medical, Dental and Shock Trauma Platoon). Additionally, the CLB provides the MEU with ammunition, postal, EOD and disbursing services. Although CLB 31 is assigned to the 3rd Marine Logistics Group, the battalion remains permanently attached to the 31st MEU. CLB 31 based on Camp Hansen in Okinawa, Japan.

What is the Family Readiness Program?

The Family Readiness Program is an integral part of the Marine Corps' family readiness program, and serves as the primary communication link between the CLB-31 Commanding Officer and the families of the Marines and Sailors assigned to CLB-31. The Family Readiness Program supports the spouses of the unit Marines by providing communication from the command, serving as a source for information and referral services and by helping foster a sense of community within the unit.

How can Family Readiness Program help me?

The Family Readiness Program assists the families of deployed Marines and Sailors in several ways, including:

1.     Keeping you informed. While the units are deployed, the Family Readiness Program is the means by which families receive all official messages from the command. Heard that the battalion is leaving early? Coming home late? Somewhere dangerous? If you want the true scoop, go to your Family Readiness Assistant as they will have the latest information direct from the unit and can help dispel any rumors. This way, you don't have to rely on the lieutenant's brother's girlfriend's nephew for information on the battalion.

2.     Providing the voice of experience. Family Readiness Assistants know the ins and outs of military living, and possess the knowledge to help other families through the difficult deployment period. In addition to their life experiences, they receive extensive training on the programs and services available to military family and are eager to pass this information on.

3.     Information Referral Services. Looking for a way to get involved with other spouses with children or similar interests? Your designated Family Readiness Assistant will gladly refer you to the endless resources that are made available to military families.

4.     Family Readiness. The Family Readiness Program’s number one mission is to enhance family readiness for the deployment, and does so by creating programs, readiness packets, and social events designed to make the separation caused by deployment a little easier to bear.

5.     A support system. Remember, you are not alone. As military families, we are part of a unique community and in a profound way - we are a family unto ourselves. Any problem you may be facing has no doubt been met and overcome by another family member and the Family Readiness Program provides the means for their experience to benefit you.

Who can become a Family Readiness Assistant?

The CLB-31 Family Readiness Program is always looking to expand its ranks. Persons interested in serving as a Assistant should contact the battalion's Family Readiness Officer. To be a Family Readiness Assistant, the applicant must.
Be the spouse of a Marine or Sailor in the unit.
Complete Family Readiness Assistant Training.
Serve as a reliable and dependable communication link.
Foster a sense of community within the MEU's families.
Be willing to listen and help other families through difficult times.

Family Readiness Deployment Concerns


Let family and friends know deployed mailing address.
Know who to contact in an emergency.
Discuss special occasions.
Decide most economical means of communication.
Renew driver licenses.
Check ID cards: condition and expiration date.
In cases of pregnancy, discuss transportation and child care options.
Dependent and split pay allotments.
Discuss bill payments.
Prepare budget.
Discuss filing taxes.
Discuss direct deposit accounts.
How will you handle financial emergencies?


Discuss location of documents.
Marriage and birth certificates.
Insurance policies.
Tax returns.
Shot records.
Social Security cards.
Automobile title/loan papers.


Off-base residents: WHO, WHERE, WHEN, and AMOUNT to pay rent.
How to buy yen and HOW MUCH yen to buy.
Where to pay phone and utility bills.
Where the lease and rental agreement is located.
The housing agency name, number, and location.
Emergency maintenance phone numbers.
Know who to contact for appliance repairs.
Ensure arrangements are made for move on base.
On-base residents: Notify KAB housing for maintenance work.
Know where self-help is located.
Know how to change the filters.
Know where fuse box is located.
Know to contact PMO if locked out of quarters.
Keep security, ambulance, and fire department numbers handy.


During absence, ensure that your spouse is financially prepared to pay: JCI (Japanese Compulsory Insurance) American Insurance Japanese Road Tax (mandatory) due April-May.
Location of title, insurance, and inspection papers.
Auto maintenance: Current base sticker. Check oil, brake fluid, water in radiator, and battery. Change worn tires or add air.


Update will.
Establish Power of Attorney.
Know location of all legal documents.
Ensure papers are in safe, dry place.
Prepare a Family Care Plan.

Combat Logistics Battalion 31 (CLB-31) was activated in June 1979 at Kaneohe Bay, Hawaii, as Logistic Support Unit 31, 31st Marine Amphibious Unit, Fleet Marine Forces Pacific. The unit was re-designated October 1979 as Marine Amphibious Unit Service Support Group 31 (MSSG-31), 31st Marine Amphibious Unit (31st MAU). The unit was deactivated in April 1985. In September 1992, the unit was reactivated as Marine Expeditionary Unit Service Support Group 31 (MSSG-31) operationally controlled by the reactivated 31st Marine Expeditionary Unit (MEU).

From its time of reactivation to 1998, MSSG-31 supported the 31st MEU in various theater exercises in the Pacific region such as VALIANT USHER, COBRA GOLD, and FOAL EAGLE. In December 1998, 31st MEU was the theater reserve for OPERATION DESERT FOX where it conducted a non-combatant evacuation of 90 American citizens from Kuwait. In January 2000, MSSG-31 was part of the Special-Purpose Marine Air-Ground Task Force (SPMAGTF) East Timor supporting the Australian-led International Forces in East Timor to the new United Nations Transitional Administration East Timor. From September 2004 to March 2005, MSSG-31 supported Battalion Landing Team 1st Battalion 3rd Marines during combat operation in support of Operation IRAQI FREEDOM participating in Operation PHANTHOM FURY. In January 2006, MSSG-31 supported humanitarian relief efforts in Leyte, Philippines.

In October 2006, MSSG-31 was re-designated to its current moniker CLB-31. From May to June of 2008, CLB-31 responded to the post-cyclone relief efforts in Myanmar in Operation CARING RESPONSE. In 2010, CLB-31 provided disaster relief to Luzon, Philippines after Super Typhoon Megi. Then in 2011, while conducting an exercise in Malaysia, CLB-31 participated in Operation TOMODACHI in the relief efforts after the earthquake and tsunami that devastated Oshima Island, Japan.

In August 2015, elements of CLB-31 were redirected from an exercise in vicinity of Guam and Palau in order to perform Defense Support of Civilian Authorities (DSCA) operations, providing disaster relief to the island of Saipan following Typhoon Soudelor. While in Saipan, the battalion used organic water production equipment to produce 279,375 gallons of water. Combined with the water production capabilities of the USS Ashland (LSD-48), the battalion distributed a total of 366,200 gallons of potable water to the population of Saipan. In support of the Federal Emergency Management Agency (FEMA), the American Red Cross, and other non-governmental organizations (NGO's), the battalion distributed 255 pallets of supplies, consisting of 47,040 meals, 16,625 gallons of packaged water, and additional supplies. The battalion ensured the uninterrupted operation of the island's emergency services communication network by delivering power generation to the communications tower at the highest point on the island.

CLB-31 recently completed the 31st MEU Summer Deployment 17.2 in September 2017. This deployment included the multinational exercise TALISMAN SABER in Australia, where the 31st MEU participated in an amphibious landing and conducted follow-on operations ashore alongside the US Navy, US Army, Royal Australian Army, and Royal Australian Navy.

Welcome Aboard :: Marine Corps Community Services (MCCS) information & resources for Marines, Sailors, & Families arriving to Okinawa.

PCS Checklist :: MCCS checklist to help keep track of the PCS process.

Must Know Information (February 2018) :: MCCS comprehensive guide for relocating to Okinawa.

Smooth Move Toolkit :: MCCS move-specific information & resources.

Overseas Medical Screening :: Naval Hospital Okinawa overseas screening contact information, forms, & processing.

Exceptional Family Member Program (EFMP) :: MCCS EFMP events & information.

Non-citizen Family Member Guidance :: U.S. Government personnel (military and direct-hire civil service employees), their spouses and minor children who hold lawful resident status of the United States may remain outside the United States for the duration of an official overseas assignment plus four months without losing their resident status. The Okinawa Consulate recommends that travelers to whom this applies carry with them a print-out of Title 8, Code of Federal Regulations (8 CFR), paragraph 211.1(a)(6) and Dept of State Foreign Affairs Manual (9FAM), paragraph 202.2-7(A)e(1) .

Joint Reception Center (JRC) :: Provides in-processing & orientation for all unaccompanied E-5 & below Marines and green-side Sailors.

Newcomers' Orientation :: Required for all Marines, Sailors, & family members after arriving on Okinawa.


Officer of the Day: 315-623-1884 (cell: +81 090-6861-7988)

S-1: 315-623-1203

S-2: 315-623-1791

S-3: 315-623-7248

S-4: 315-623-1630

S-6: 315-623-3146

Disbursing: 315-623-3136

EOD: 315-623-1632

MP: 315-623-3155

Engineers: 315-623-3115

Maintenance: 315-623-3112

Motor Transport: 315-623-3124

Supply: 315-623-2620

Landing Support: 315-623-3156

HSS: 315-623-3152

If you need to contact the CO, XO, or Sergeant Major please call the S-1.


Dialing Instructions from Japanese Phone to DSN:

Camp Hansen (All CLB-31 Numbers) 098-969-(XXXX last 4 #'s of DSN line)


Dialing Instructions from US to:

DSN (Military Phones): 011-81-611-7(XX-XXXX last 6 #'s of DSN line)

Japanese Cell Phone: 011-81-(area code without leading 0)-XXXX-XXXX (example 001-81-90-9957-2716)

CLB-31 News

Combat Logistics Battalion 31 Leaders

Lieutenant Colonel Alissa L. Tarsiuk
Commanding Officer, Combat Logistics Battalion 31

LtCol Tarsiuk graduated from the University of the Pacific in 2004 and commissioned in August 2007.

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Sergeant Major Mario R. Virto
Sergeant Major, Combat Logistics Battalion 31

Sergeant Major Mario R. Virto enlisted in the Marine Corps in August 2000 and reported to MCRD San

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