3RadBn

Who we are

3rd Radio Battalion's mission is to conduct signals intelligence (SIGINT) and electronic warfare (EW), limited cyberspace operations, and special intelligence (SI) communications in support of III MEF and its subordinate elements.

FEATURED NEWS

III Marine Expeditionary Force proves readiness in command post field training exercise during Resolute Dragon 25

The rain flies covering over one hundred tents flap in the steamy Okinawa breeze. Dust swirls across

U.S. and ROK Marines Conclude Ulchi Freedom Shield 25

MARINE CORPS BASE CAMP S. D. BUTLER, Okinawa, Japan – III Marine Expeditionary Force (III MEF) successfully concluded Exercise Ulchi Freedom Shield 25 (UFS 25) Aug. 28 with their Republic of Korea (ROK) Marine Corps allies, completing pivotal combined training operations.

MMOA Roadshow is Coming to Okinawa

The MMOA Roadshow is coming to Okinawa, Sept. 8-9, 2025. There will be four roadshow briefs, a boards and programs brief as well as company and field grade town halls for your specific MOS.

31st MEU Supports Anti-Submarine Warfare Operation in Indo-Pacific

On Aug. 8, 2025, Marine Medium Tiltrotor Squadron 265 (Reinforced), 31st Marine Expeditionary Unit (MEU), supported an operational anti-submarine warfare (ASW) mission utilizing the MV-22B Osprey teamed with two Navy MH-60R Sea Hawk helicopters to distribute sonobuoys. This iteration of anti-submarine operations represents the first time a forward-deployed MV-22B assigned to the 31st MEU has operated in an ASW role within the Indo-Pacific theater, significantly enhancing the 31st MEU’s capabilities and contributing to regional maritime security.

3/12 Executes HIMARS Dry-Fire Training at Camp Fuji

COMBINED ARMS TRAINING CENTER, CAMP FUJI, Japan – U.S. Marines with 3d Battalion, 12th Marine Regiment, 3d Marine Division conducted High Mobility Artillery Rocket System (HIMARS) dry-fire training at Combined Arms Training Center (CATC) Camp Fuji from June 11-13, 2025. This training represents a significant enhancement of Camp Fuji’s capability to support long-range fires and reflects our commitment to maintaining readiness and deterrence in the Indo-Pacific alongside our Japanese partners.