III MEF Support Battalion

Who we are

III Marine Expeditionary Force (MEF) Support Battalion provides and coordinates direct combat service support (CSS), security, and administrative services to III Marine Expeditionary Force (MEF), 3d Marine Expeditionary Brigade (MEB), and III MEF Information Group (MIG) Command Elements (CE) in order to enable III MEF to win in competition and conflict.

Featured News

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.

III MEF Information Group Concludes Kaiju Rain 25, Strengthens Information Warfare Capabilities in Indo-Pacific

The III Marine Expeditionary Force Information Group concluded Exercise Kaiju Rain 25 on May 12 with a closing ceremony, marking a significant step forward in advancing the Marine Corps’ operations across the information environment in the Indo-Pacific.