U.S. Army Western Command
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The United States Army Pacific (USARPAC) is an
Army Service Component Command Army Service Component Commands (ASCCs) are U.S. Army commands responsible for recommendations to the Joint Force Commander on the allocation and employment of U.S. Army forces within a unified combatant command (CCMD) or further assigned to a su ...
which serves as the Army service component for
United States Indo-Pacific Command The United States Indo-Pacific Command (USINDOPACOM) is the unified combatant command of the United States Armed Forces responsible for the Indo-Pacific, Indo-Pacific region. It is the oldest and largest of the unified combatant commands. Lead ...
. It may also serve as a Joint Task Force headquarters. The command has forces in
Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...
,
Hawaii Hawaii ( ; ) is an island U.S. state, state of the United States, in the Pacific Ocean about southwest of the U.S. mainland. One of the two Non-contiguous United States, non-contiguous U.S. states (along with Alaska), it is the only sta ...
,
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
, and
South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
. It also performs missions in Southeast Asia, in the countries stretching from the
Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
all the way to
Bangladesh Bangladesh, officially the People's Republic of Bangladesh, is a country in South Asia. It is the List of countries and dependencies by population, eighth-most populous country in the world and among the List of countries and dependencies by ...
and
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
. United States Forces Korea (USFK) has had operational command and control of US Forces in Korea since January 2012, and USARPAC headquarters oversees the manning, training, and equipping of US Army forces assigned to USFK. However, subordinate units of this command sometimes perform
humanitarian Humanitarianism is an ideology centered on the value of human life, whereby humans practice benevolent treatment and provide assistance to other humans to reduce suffering and improve the conditions of humanity for moral, altruistic, and emotiona ...
missions in places such as
Haiti Haiti, officially the Republic of Haiti, is a country on the island of Hispaniola in the Caribbean Sea, east of Cuba and Jamaica, and south of the Bahamas. It occupies the western three-eighths of the island, which it shares with the Dominican ...
,
Cuba Cuba, officially the Republic of Cuba, is an island country, comprising the island of Cuba (largest island), Isla de la Juventud, and List of islands of Cuba, 4,195 islands, islets and cays surrounding the main island. It is located where the ...
, and the
Middle East The Middle East (term originally coined in English language) is a geopolitical region encompassing the Arabian Peninsula, the Levant, Turkey, Egypt, Iran, and Iraq. The term came into widespread usage by the United Kingdom and western Eur ...
.


History

USARPAC traces its lineage back to 1898 when the United States became a major power in the Pacific. In 1921 Fort Shafter became the headquarters for the Hawaiian Department. When the United States entered World War II, the Hawaiian Department became subordinate to the Commander-in-Chief,
Pacific Ocean Areas Pacific Ocean Areas (POA) was a major Allied military command in the Pacific Ocean theater of World War II. It was one of four major Allied commands during the Pacific War and one of three United States commands in the Asiatic-Pacific Theater. ...
.


History of designations

Throughout its history the command was designated: * US Army Forces, Central Pacific Area (1943–44) * US Army Forces, Pacific Ocean Areas (1944–69) * US Army Forces, Middle Pacific (1945–47) * US Army, Pacific (1947–1974) * US Army Western Command (1979–1990) * United States Army Pacific (1990–present)


Historical summary

During the
Korean War The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was s ...
, USARPAC provided combat forces, training, and logistics. During the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
, the command provided the same support to
United States Army Vietnam The United States Army, Vietnam (USARV) was a Corps-level support command of the United States Army during the Vietnam War. Establishment Although the U.S. Army Support Group was the Army component command within Military Assistance Command, ...
. After the war the Army cut its presence in the region as there was no longer a need for such a large number of combat forces in the Pacific. Subsequently, USARPAC was eliminated as a component command and Army forces in Korea and Japan became separate major commands. In Hawaii, USARPAC headquarters was superseded by US Army Support Command Hawaii (USASCH) and a Department of the Army field operating agency, US Army CINCPAC Support Group. In 1979 the Army established US Army Western Command (WESTCOM) as a major command and the Army component of US Pacific Command. WESTCOM took command of Army forces in Hawaii. In 1989 it added
United States Army Alaska The United States Army Alaska (USARAK or "America's Arctic Warriors") was a military command of the United States Army located in the U.S. state of Alaska. A subordinate command of I Corps (United States), I Corps, USARAK was the ground element ...
and in 1990 United States Army, Japan. In 1990 WESTCOM was renamed USARPAC. USARPAC has sent forces on multiple humanitarian missions, disaster relief, and defense support of civil authorities. In October 2000 the headquarters reorganized as a multi-component Army service component command. Since
9/11 The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Nineteen terrorists hijacked four commercial airliners, crashing the first two into ...
, the command plays a major role in the
homeland defense Homeland defense (HD) is the protection of a territory, sovereignty, domestic population, and critical infrastructure against external threats and aggression. (Definition will be incorporated into JP 3-26Definition deferred to ''Homeland Defense, J ...
of the United States. The command has also sent soldiers in support of the Global War on Terrorism to fill operational gaps. The command insignia was designed in 1944. It depicts the axis of advance of U.S. forces across the pacific.


Commander's responsibilities

* Responsible to SECARMY for execution of 10 USC §7013(b) responsibilities * Admins and supports army units assigned or attached to United States Indo-Pacific Command * Reports to the Commander, United States Indo-Pacific Command


Structure

* Army Pacific,
Fort Shafter Fort Shafter is a census-designated place Page 4/ref> located in the City and County of Honolulu, Hawai‘i. It is the headquarters of the United States Army Pacific, which commands most Army forces in the Asia-Pacific region with the exceptio ...
(HI) ** Eighth Army,
Yongsan Garrison Yongsan Garrison (; Hanja: ), meaning "dragon hill garrison", is an area located in the Yongsan District of central Seoul, South Korea. The site served as the headquarters for U.S. military forces stationed in South Korea, known as United States ...
(
South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
) *** 2nd Infantry Division,
Camp Humphreys Camp Humphreys (), also known as United States Army Garrison-Humphreys (USAG-H), is a United States Army garrison located near Anjeong-ri and Pyeongtaek metropolitan areas in South Korea. Camp Humphreys is home to Desiderio Army Airfiel ...
(South Korea) ***
19th Expeditionary Sustainment Command 19th Expeditionary Sustainment Command is a Sustainment Command of the United States Army The United States Army (USA) is the primary Land warfare, land service branch of the United States Department of Defense. It is designated as the Army ...
,
Daegu Daegu (; ), formerly spelled Taegu and officially Daegu Metropolitan City (), is a city in southeastern South Korea. It is the third-largest urban agglomeration in South Korea after Seoul and Busan; the fourth-largest List of provincial-level ci ...
(South Korea) ** I Corps,
Joint Base Lewis–McChord Joint Base Lewis–McChord (JBLM) is a U.S. military installation home to I Corps and 62nd Airlift Wing located south-southwest of Tacoma, Washington under the jurisdiction of the United States Army Joint Base Headquarters, Joint Base Lewis ...
(WA) *** 7th Infantry Division, Joint Base Lewis–McChord (WA) *** 25th Infantry Division,
Schofield Barracks Schofield Barracks is a United States Army installation and census-designated place (CDP) located in Honolulu and in the Wahiawa District of the Hawaiian island of Oahu, Hawaii. Schofield Barracks lies adjacent to the town of Wahiawā, separated ...
(HI) ***
11th Airborne Division The 11th Airborne Division ("Arctic Angels") is a United States Army multirole infantry division made up of specialized light infantry and airborne infantry based in Alaska. Currently, this unit specializes in arctic warfare, airborne operat ...
, Fort Richardson (AK) ***
United States Army Japan United States Army, Japan (USARJ) is a Major Command of the United States Army. It operates port facilities and a series of logistics installations throughout Honshū and Okinawa. USARJ participates actively with the Japan Ground Self-Defense F ...
,
Camp Zama is a United States Army post located in the cities of Zama, Kanagawa, Zama and Sagamihara, in Kanagawa Prefecture, Japan, about southwest of Tokyo. Camp Zama is home to the U.S. Army Japan (USARJ), I Corps (Forward), U.S. Army Aviation Batta ...
(
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
) *** 593rd Expeditionary Sustainment Command, Joint Base Lewis–McChord (WA) **
94th Army Air and Missile Defense Command The 94th Army Air and Missile Defense Command (94th AAMDC) is an activated (at Fort Shafter on 16 October 2005) Air Defense Artillery command of the United States Army assigned to United States Army Pacific. It is headquartered at Joint Base Pea ...
, Fort Shafter ** 8th Theater Sustainment Command, Schofield Barracks *** 8th Military Police Brigade, Schofield Barracks *** 130th Engineer Brigade, Schofield Barracks ** 311th Signal Command (Theater) (Pacific) *** 1st Signal Brigade,
Seoul Seoul, officially Seoul Special Metropolitan City, is the capital city, capital and largest city of South Korea. The broader Seoul Metropolitan Area, encompassing Seoul, Gyeonggi Province and Incheon, emerged as the world's List of cities b ...
, South Korea *** 516th Signal Brigade, Fort Shafter **
18th Medical Command The 18th Medical Command is a US Army medical theater enabling command, which provides operational medical support to United States Army, Pacific. The headquarters was located on the Korean peninsula from 1984 until 2008, when it was relocated to ...
, Fort Shafter **
9th Mission Support Command 9th Mission Support Command (9th MSC) is a United States Army Reserve unit located in Fort Shafter, Honolulu, Hawai'i. The 9th Mission Support Command is a U.S. Army Reserve Command under the operational control of U.S. Army Pacific. Headqu ...
, Fort Shafter, part of
US Army Reserve The United States Army Reserve (USAR) is a reserve force of the United States Army. Together, the Army Reserve and the Army National Guard constitute the Army element of the reserve components of the United States Armed Forces. History Origi ...
**
196th Infantry Brigade The 196th Infantry Brigade ("Chargers"), also known as the Charger Brigade was first formed on 24 June 1921 as part of the United States Army Reserve's 98th Division with the responsibility of training soldiers. World War II During World War II, ...
, Fort Shafter, part of US Army Reserve **
500th Military Intelligence Brigade The 500th Military Intelligence Brigade is a unit of the United States Army and subordinate to the U.S. Army Intelligence and Security Command. Its mission is to provide tailored, multi-disciplined intelligence and intelligence capabilities in supp ...
, Schofield Barracks, part of Army Intelligence and Security Command ** 5th Battlefield Coordination Detachment,
Joint Base Pearl Harbor–Hickam Joint Base Pearl Harbor–Hickam (JBPHH) is a United States military base on the island of Oahu, Hawaii. It is Joint Base, an amalgamation of the United States Air Force's Hickam Air Force Base and the United States Navy's Naval Station Pearl ...
Former units include the U.S. Army Chemical Activity, Pacific, at
Johnston Atoll Johnston Atoll is an Unincorporated territories of the United States, unincorporated territory of the United States, under the jurisdiction of the United States Air Force (USAF). The island is closed to public entry, and limited access for mana ...
, which traced some of its history to the 267th Chemical Company and the
Project 112 Project 112 was a biological and chemical weapon experimentation project conducted by the United States Department of Defense from 1962 to 1973. The project started under John F. Kennedy's administration, and was authorized by his Secretary of ...
biological warfare defense experiments. This became the
Johnston Atoll Chemical Agent Disposal System Johnston Atoll Chemical Agent Disposal System (JACADS) was the U.S. Army's first chemical munitions disposal facility. It was located on Johnston Island, at Johnston Atoll and completed its mission and ceased operation in 2000. Background Prior ...
, which was finally deactivated in 2001.


Commanders


References


External links

; Government *
Lineage and Honors Information
at the
U.S. Army Center of Military History The United States Army Center of Military History (CMH) is a directorate within the United States Army Training and Doctrine Command. The Institute of Heraldry remains within the Office of the Administrative Assistant to the Secretary of the Arm ...
; General information * {{Authority control 1945 establishments in Hawaii Military units and formations in Hawaii Military units and formations established in 1945 Military units and formations of the United States in the Cold War Organizations based in Hawaii
Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is bounded by the cont ...