12th Marine Regiment

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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Jungle Warfare Exercise 23 Air Insertion

U.S. Marines with 3d Battalion, 4th Marines provide security at a helicopter landing zone during Jungle Warfare Exercise 23 in the Northern Training Area on Okinawa, Japan, Feb. 14, 2023. JWX 23 is a large-scale field training exercise focused on leveraging the integrated capabilities of joint and allied partners to strengthen all-domain awareness, maneuver, and fires across a distributed maritime environment. (U.S. Marine Corps photo by Cpl. Alyssa Chuluda)

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ARTP 22.4 – Combat Operation Center Security

U.S. Marine Corps Lance Cpl. Brandon Nava, a supply administration and operations specialist with 3d Battalion, 12th Marines, posts security during Artillery Relocation Training Program 22.4 at the Yausubetsu Training Area, Hokkaido, Japan, Jan. 27, 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. Nava is a native of El Paso, Texas. (U.S. Marine Corps photo by Lance Cpl. Jaylen Davis.)

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ARTP 22.3

U.S. Marines with 3d Battalion, 12th Marines conduct live fire training during Artillery Relocation Training Program 22.3 at the Ojojihara Maneuver Area, Miyagi, Japan, Dec. 3, 2022. 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 Eduardo Delatorre)

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Resolute Dragon 22: Himars Live-fire

U.S. Marines with 3d Battalion, 12th Marines, 3d Marine Division, fire rockets from an M142 High Mobility Artillery Rocket System during exercise Resolute Dragon 22 at Yausubetsu Maneuver Area, Hokkaido, Japan, Oct. 14, 2022. Resolute Dragon 22 is an annual bilateral exercise designed to strengthen the defensive capabilities of the U.S.-Japan Alliance by exercising integrated command and control, targeting, combined arms, and maneuver across multiple domains. (U.S. Marine Corps photo by Cpl. Diana Jimenez)

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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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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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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