About US


The 9th Mission Support Command is a U.S. Army Reserve Command under the operational control of U.S. Army Pacific.

Headquartered in Honolulu, Hawaii, our command is comprised of approximately 3,500 Army Reserve Soldiers and 160 civilians throughout the Pacific to include Hawaii, Alaska, American Samoa, Japan, Korea, Guam and Saipan.

The 9th MSC is engaged throughout the Asia-Pacific realm, providing trained and ready forces to overseas contingency operations, playing a vital role in approximately 20 U.S. Army Pacific Theater Security Cooperation Program exercises, and providing key battle staff in support of Joint Task Force Homeland Defense.

Some of our major subordinate commands include the Theater Support Group; 100th Battalion, 442nd Infantry Regiment; the 322nd Civil Affairs Brigade; the 303rd Maneuver Enhancement Brigade; and the 411th Engineer Battalion.


Provide peacetime mission command and sustainment of assigned and attached US Army Reserve (USAR) units and personnel as a direct reporting unit and senior Army Reserve Headquarters to the Commander, US Army Pacific. Provide trained and ready USAR forces for mobilization, and support all USAR demobilization requirements.

Execute all USAR Title 10 responsibilities on belhaf of the Commander, US Army Pacific. On order provide USAR capabilities in support of Theater Security Cooperation Plan (TSCP). Be prepared to provide capabilities in support of Humanitarian Assistance Disaster Relief (HADR) and/or Defense Support to Civilian Authorities (DSCA).

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