12th Marine Regiment

1/12 Deactivation Ceremony

U.S. Marines with 1st Battalion, 12th Marines, 3d Marine Division, participate in the unit’s deactivation ceremony on Marine Corps Base Hawaii, May 26, 2023. The deactivation is in accordance with Force Design 2030’s modernization efforts. The battalion has played a valuable role in setting conditions for the 3d Marine Littoral Regiment, and future MLRs, to provide combat ready and lethal forces in the Indo-Pacific. 3d MLR and 12th Marines, which is scheduled to transition to an MLR in 2025, will provide ready and capable stand-in forces to the first island chain, bolstering the United States Indo-Pacific Command’s ability to support deterrence efforts and respond to potential crises with allies and partners. (U.S. Marine Corps photo by Sgt. Israel Chincio)

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Commanding General's PT with 12th Marines

U.S. Marine Corps Maj. Gen. Jay Bargeron, commanding general of 3d Marine Division, and Sgt. Maj. Michael Martinet, sergeant major of 3d Marine Division, participate in a physical training session with non-commissioned officers from 12th Marines commemorating the establishment of the 12th Marines NCO Association on Camp Hansen, Okinawa, Japan, March 17, 2023. (U.S. Marine Corps photo by Lance Cpl. Eduardo Delatorre)

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ARTP 23.1: Medevac

U.S. Navy Corpsmen treat simulated casualties for a medical evacuation drill during Artillery Relocation Training Program 23.1 at Ojojihara Maneuver Area, Miyagi, Japan, May 23, 2023. ARTP provides Marines the opportunity to rehearse live-fire operations across a range of climates and conditions, providing combat ready forces in the Indo-Pacific. The Corpsmen and Marines are currently deployed with 3d Battalion, 12th Marines, 3d Marine Division. (U.S. Marine Corps photo by Cpl. Michael Taggart)

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Jamin Davis visits Marines of 3/12

Jamin Davis, a linebacker for the Washington Commanders, runs with U.S. Marines from 3d Battalion, 12th Marines, 3d Marine Division on Camp Hansen, Okinawa, Japan, March 10, 2023. Davis’ visit with the Marines included a physical training session and a tour of the regiment's facilities. Davis said the experience deepened his appreciation of our country's service members. “Marines go through so much on a daily basis. It just makes you respect them that much more. Every chance I get I’m going to step up and say, ‘thank you.’” (U.S. Marine Corps photo by Sgt. Jennifer Andrade)

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3/12 Sergeant Major Relief and Appointment Ceremony

U.S. Marines with 3d Battalion, 12th Marines conduct a relief and appointment ceremony on Camp Hansen, Okinawa, April 4, 2023. The ceremony commemorates the transfer of responsibilities from Sgt. Maj. Glenn Ray to Sgt. Maj. Joshua Minter. (U.S. Marine Corps Photo by Cpl. Lorenzo Ducato)

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ARTP 22.4 – Live-Fire Training

U.S. Marines with 3d Battalion, 12th Marines fire an M777 towed 155 mm howitzer while conducting night live-fire training during Artillery Relocation Training Program 22.4 at the Yausubetsu Maneuver Area, Hokkaido, Japan, Jan. 30, 2023. The skills developed at ARTP increase the proficiency and readiness of the only permanently forward-deployed artillery unit in the Marine Corps, enabling them to provide precision indirect fires. (U.S. Marine Corps photo by Lance Cpl. Jaylen Davis.)

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Freedom Shield 23: HIRAIN

U.S. Marines assigned to 3d Battalion, 12th Marines, and U.S. Airmen with the 353rd Special Operations Wing load an M142 High Mobility Artillery Rocket System onto a U.S. Air Force MC-130J Commando II at Kadena Air Base on Okinawa, Japan for a HIMARS Rapid Infiltration in support of exercise Freedom Shield in the Republic of Korea, March 19, 2023. Freedom Shield 23 is a defense-oriented exercise designed to strengthen the ROK-U.S. Alliance, enhance combined defense posture, and strengthen security and stability on the Korean peninsula. (U.S. Marine Corps photo by Staff Sgt. Abrey D. Liggins)

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12th Marine Regiment Leaders

Commanding Officer

Colonel Jonathan N. Sims

Colonel Jonathan Nicklas Sims earned his commission from the Officers Candidate Course after graduating from Texas Tech University with a Bachelor Degree in Economics. Upon graduation from The Basic School in December 1998, he reported to Ft Sill, Oklahoma for instruction in the United States Army...

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Official Photo

Sergeant Major

Sergeant Major Ismael G. Bamba

Sergeant Major Ismael G. Bamba enlisted in the Marine Corps in March 1999 and completed recruit training at MCRD Parris Island, SC where he was meritoriously promoted to Private First Class. Following Recruit Training, he attended the School of Infantry in Camp Lejeune, NC where he received the MOS...

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Official Photo

12th Marine Regiment

3d Marine Division

UNIT 36050

FPO AP 96385-6050

After Hours Duty Phone

DSN: 315-623-7355

COM: +81-98-969-7355

Uniform Victim Advocate (UVA)

DSN: 315-623-4647

COM: +81-98-969-4647

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S-1 (Administration)

Billet	Phone Number
S-1 Adjutant Officer	DSN: 315-623-4141 COM: +81-98-969-4141
S-1 Chief	DSN: 315-623-7355 COM: +81-98-969-7355
Career Planner	DSN: 315-623-2000 COM: +81-98-969-2000
Unit Voting Assistance Officer	DSN: 315-623-1140 COM: +81-98-969-1140

S-2 (Intelligence)

Billet	Phone Number
S-2 Officer	DSN: 315-623-7237 COM: +81-98-969-7237

S-3 (Operations)

Billet	Phone Number
S-3 Officer	DSN: 315-623-4520 COM: +81-98-969-4520
S-3 Chief	DSN: 315-623-4050 COM: +81-98-969-4050

S-4 (Logistics)

Billet	Phone Number
S-4 Officer	DSN: 315-623-7277 COM: +81-98-969-7277
S-4 Chief	DSN: 315-623-7216 COM: +81-98-969-7216
Supply	DSN: 315-623-7679 COM: +81-98-969-7679
Chaplain	DSN: 315-623-7398 COM: +81-98-969-7398
Medical	DSN: 315-623-8807 COM: +81-98-969-8807