U.S. Army, Pacific
USARPAC commands Army forces in the Asia-Pacific region, the largest area of responsibility in the Department of Defense, covering half the globe, including 36 countries, from its headquarters at Fort Shafter.
Major USARPAC units include 8th Army; 25th Infantry Division; U.S. Army, Alaska; U.S. Army, Japan and I Corps (Forward); 8th Theater Sustainment Command; 311th Signal Command Theater; 94th Army Air and Missile Defense Command; 9th Mission Support Command; 18th Medical Command; 196th Infantry Brigade; and 500th Military Intelligence Brigade.
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8th Theater Sustainment Command
The 8th Theater Sustainment Command is a complex organization of about 5,000 soldiers with sustainment responsibilities spanning the Pacific Command area of responsibility. Major subordinate commands include the 8th Military Police Brigade, the 130th Engineer Brigade and the45th Sustainment Brigade on Schofield Barracks. The 8th TSC also has logistics operational control over the 10th Support Group in Okinawa, Japan.
As the senior Army logistics command in the USPACOM AOR, the 8th TSC sets the theater to integrate and conduct sustainment of unified land operations, advance regional relationships and provide ready forces to the global force pool to enable operational freedom of action across the full range of military operations to shape and posture for a stable and secure USPACOM AOR.
The 8th TSC functions as a fully capable, theater-enabling command, integrating multifunctional skill sets across the Pacific theater while continuing to support overseas contingency operations with trained and ready forces. As a credible enabler with an expanding mission set in a complex environment, the 8th TSC continues to train technically and tactically adaptive leaders to successfully execute the mission safely and autonomously.
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311th Signal Command (Theater)
Headquartered at Fort Shafter, the 311th Signal Command Theater combines the strengths of more than 3,000 active-duty and Reserve soldiers and Army civilians to bring expertise, experience and commitment to meet the Army’s communications mission in the Pacific. As a USARPAC Theater Enabling Command, the 311th SC(T) exercises operational control over the 516th Signal Brigade, headquartered in Hawaii, and the 1st Signal Brigade, in Korea.
The 516th Signal Brigade commands five battalions and a Regional Cyber Center. Battalions include the 30th Signal Battalion in Hawaii; the 58th Signal Battalion in Okinawa, Japan; the 78th Signal Battalion in Japan; the 59th Signal Battalion in Alaska; and the 307th Expeditionary Signal Battalion in Hawaii and Alaska.
The 1st Signal Brigade commands three battalions and an RCC in Korea. Battalions include the 36th Signal Battalion, the 41st Signal Battalion and the 304th ESB.
The 311th SC(T) plans, engineers, operates, maintains, defends and extends Army and Joint networks throughout the Pacific theater to enable mission command for unified land operations across all Joint, Interagency, Intergovernmental and Multinational operational phases and, as directed, supports cyberspace operations to ensure U.S. and allied freedom of action in cyberspace and to deny the same to adversaries.
The vision of the 311th SC(T) is “One Team” of proud and trusted professionals delivering responsive, reliable and operationally relevant network capabilities to fellow USARPAC and USPACOM warfighters — on time and on target, regardless of location or mission.
Visit the 311th SC(T) online at:
94th Army Air and Missile Defense Command
The 94th Army Air and Missile Defense Command is responsible for conducting joint and combined theater air and missile defense in support of designated operational plans and contingency operations within the Pacific Command area of responsibility. The command has its headquarters on Joint Base Pearl Harbor-Hickam to enhance close mission relationships with the other services.
Initially constituted as the 94th Air Defense Artillery Dec. 16, 1940, the command has gone through many reorganizations and redesignations during its storied history. The current command was activated Oct. 16, 2005, at Fort Shafter under the USARPAC headquarters.
The 94th AAMDC serves as a joint integrator providing synchronization with the Army, Air Force, Navy and Marine Corps in joint theater air and missile defense operations. During multinational operations, the 94th AAMDC, with subordinate units in Japan, Korea and Guam, also integrates combined air and missile defense assets to provide protection for all coalition forces.
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9th Mission Support Command
About 3,700 9th Mission Support Command soldiers and civilians proudly serve in Hawaii, Alaska, American Samoa, the Republic of Korea, Japan, Guam and Saipan.
The 9th MSC provides peacetime mission command and sustainment of assigned and attached U.S. Army Reserve units and personnel as a direct reporting unit and senior Army Reserve Headquarters to the Commander, U.S. Army, Pacific. It provides trained and ready USAR forces for mobilization and support for all USAR demobilization requirements and executes all USAR Title 10 responsibilities on behalf of the Commander, USARPAC.
The 9th MSC serves as an enduring flexible, relevant Pacific-focused operational force that provides key capabilities to execute critical missions in support of USARPAC and the Pacific theater.
Major subordinate units include the 303rd Maneuver Enhancement Brigade, 658th Regional Support Group, 322nd Civil Affairs Brigade, 3rd Mobilization Support Group, U.S. Army Pacific-Support Unit, 1984th U.S. Army Hospital, U.S. Army Reserve Theater Support Group-Pacific, 4960th Multifunctional Training Brigade, 100th Battalion/442nd Infantry, 302nd Transportation Terminal Battalion and the 411th Engineer Battalion.
The 9th MSC is the most geographically dispersed, ethnically diverse Army Reserve organization. It is home to the only infantry battalion in the Army Reserve. In addition, it has the Logistics Support Vessel (LSV-7) SSGT Robert T. Kuroda, which is manned by a crew of Army Reserve mariners.
Visit the 9th MSC online at www.facebook.com/9thMissionSupportCommand.
18th Medical Command (Deployment Support)
The 18th Medical Command (Deployment Support), known as MEDCOM (DS), is the premier expeditionary medical theater enabling command, ensuring seamless health service support throughout the Indo-Asia Pacific Region. It provides mission command, administrative assistance and technical supervision of assigned and attached medical units within the Indo-Asia Pacific Region. The 18th MEDCOM (DS) also coordinates and executes all medical Theater Security Cooperation Program projects with appropriate specialists and expertise, helping to build defense relationships; partners and trains with host nation and multinational medical units; and cultivates medical professional contacts with host nation partners.
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196th Infantry Brigade
The 196th Infantry Brigade (Training Support Brigade) is one of 17 TSBs Army-wide. It is a multicomponent organization and Major Subordinate Command within USARPAC. Soldiers provide professional, high-quality and responsive training support to Reserve component units throughout USARPAC by planning, resourcing and executing pre- and post-mobilization training for all Army National Guard and U.S. Army Reserve units assigned throughout Hawaii, Alaska, Guam, Saipan, American Samoa and Arizona. The brigade also provides training readiness oversight for three civil support teams (93rd CST, 94th CST and 103rd CST) in Hawaii, Guam and Alaska.
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Pacific Ocean Division, U.S. Army Corps of Engineers
The Pacific Ocean Division is the engineering, design and construction agent for the Army and Air Force in Alaska, the Army in Hawaii and for all Department of Defense agencies in Japan, the Republic of Korea, and Kwajalein Atoll, Marshall Islands.
Most notably, the division contributes significantly to the peace and security in the Pacific region through the execution of multibillion-dollar construction programs for U.S. forces in Japan and the Republic of Korea.
Pacific Ocean Division also supports U.S. Pacific Command and U.S. Army Pacific’s Theater Security Cooperation strategies, the Humanitarian Assistance Program and Civil Military Emergency Preparedness with projects throughout the Asia-Pacific region.
The division’s 1,500-plus-strong workforce produces every type of construction in support of service members and their families, from barracks to high-rise family housing, from fitness centers to child care centers and from ship berths to aircraft runways and hangars.
In addition, POD has a civil works mission in Alaska and Hawaii. The division is responsible for executing federal water resources development programs in Alaska and Hawaii as well as in U.S.-controlled land in the Pacific.
Ancillary to these duties are environmental services that include studies and hazardous and toxic waste cleanup.
The POD has the largest AOR of the U.S. Army Corps of Engineers’ nine divisions. The division’s mission is executed through its four districts: Honolulu, Alaska, Japan and the Far East (Korea).
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The Honolulu District, U.S. Army Corps of Engineers’ area of operations stretches across five time zones, the equator and the International Dateline. It covers an estimated 12 million square miles from the Hawaiian Islands to American Samoa, through Micronesia to Guam and the Commonwealth of the Northern Mariana Islands. The district accomplishes military missions, including military construction, real estate and environmental services for the Army and Air Force in Hawaii, for all DOD agencies in Kwajalein Atoll and for other defense agencies in its area of operations, as assigned.
The Honolulu District’s missions include federal water resource management and development or civil works; it focuses on navigation, flood reduction and shore protection in Hawaii, the U.S. territories of Guam and American Samoa, and the Commonwealth of the Northern Mariana Islands. The district has regulatory jurisdiction governing work in waters and wetlands of the U.S. within its area of operations.
Visit the district online at:
Or, call the district at 808-835-4004.
Headquarters, U.S. Army Installation Management Command, Pacific
The Army activated the Installation Management Command Oct. 24, 2006, to consolidate and strengthen installation support services to soldiers, civilians and their families. The Pacific Region, headquartered at Fort Shafter, has garrison installations in Hawaii, Alaska, Japan, Korea and Kwajalein.
IMCOM-Pacific replaces the former agency and marks the next step in the evolution of Army installation management.
IMCOM evolved out of the Installation Management Agency, established in 2002 to reduce bureaucracy and apply a uniform business structure to manage U.S. Army installations worldwide. IMCOM continues to oversee such facets of installation management as construction, family care, food management, environmental programs, well-being, public works and installation funding.
IMCOM presently has more than 100 installations in four regions: two regions in the continental United States, one region in Europe and one in the Pacific.
IMCOM oversees a standardization process that provides soldiers, civilians and families a consistent quality of services at all installations. It also streamlines how installations receive money and ensures that installation funds are used for installation services.
By assuming installation management duties, IMCOM relieves warfighters and mission commanders of garrison tasks so they can focus on training and missions.
The full authority of command is vital to effectively direct the vast resources necessary to support troop deployments while meeting the needs of their families. Consolidating the installation management structure under IMCOM optimizes resources, protects the environment and enhances the well-being of the Army community.
IMCOM provides fast, efficient and agile support to commanders in the performance of their tactical and strategic missions.
The Installation Management Command is headquartered on Fort Sam Houston, Texas.
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