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

3d Radio Battalion Change of Command

MARINE CORPS BASE HAWAII, Hawaii - On 18 June 2025, 3d Radio Battalion bid fair winds and following seas to Lieutenant Colonel Gary A. Keefer, and welcomed Lieutenant Colonel Sean F. X. Barrett to the family. Lieutenant Colonel Keefer was the Battalion Commander of 3d Radio Battalion for three years and will be retiring after 23 years of faithful service. Lieutenant Colonel Barrett is assuming command of 3d Radio Battalion after serving consecutive assignments at I Marine Expeditionary Force G-2.

Space Force Supports III MEF with Tactical Space Integration

OKINAWA, Japan- U.S. Space Force Maj. Ben Pearce and Capt. Hannah Garcia-Park, both with Mission Delta-11 (Space Ranges, Aggressors, Tactics and Exercises), conducted tactical level space operations for the first time in history June 9, 2025, at III Marine Expeditionary Force (III MEF), Okinawa, Japan. The Guardians injected critical tactical subject matter expertise directly supporting III MEF's mission, while also delivering realistic and challenging space aggressor training enhancing the lethality and combat power of the entire joint force.

GySgt Schwartz is Awarded the Sergeant Harry D. Myers Award

MARINE CORPS BASE HAWAII, Hawaii – Gunnery Sergeant Ryan M. Schwartz, company gunnery sergeant of Communications company, 3d Marine Littoral Regiment, 3d Marine Division, was awarded the United States Marine Corps Sergeant Harry D. Myers Award for his significant contribution to the combat readiness of 3d MLR.

KAMANDAG 9 | 3d MLR Conducts Simulated Maritime Strikes with NMESIS

BATANES ISLANDS, Philippines – Strategically positioned on an island in the Luzon Strait, U.S. Marines with 3d Littoral Combat Team, 3d Marine Littoral Regiment, 3d Marine Division, established a Fires Expeditionary Advanced Base (EAB) with the Navy-Marine Expeditionary Ship Interdiction System (NMESIS) and conducted simulated maritime interdiction as a part of Exercise KAMANDAG 9, June 1, 2025. The event was tied to a larger Maritime Key Terrain Security Operation (MKTSO), during which U.S. Marines with 3d LCT and Philippine Marines with Marine Battalion Landing Team 10 rehearsed securing and defending key maritime terrain in the advancement of a Free and Open Indo-Pacific.

Activated Reserve Marines Rehearse Crisis Response

CAMP SCHWAB, OKINAWA, JAPAN – On May 8th, 2nd Battalion, 23rd Marines (2/23) executed an Alert Contingency Marine Air-Ground Task Force (ACM) rehearsal designed to assess the battalion’s readiness to rapidly respond to a range of crises. Operating under the 4th Marine Regiment, 3rd Marine Division on Okinawa, 2/23 improved their ability to quickly mobilize and complete complex operations under time-sensitive conditions.