United States Army Pacific

United States Army Pacific
Unit name	United States Army Pacific
Caption	Shoulder sleeve insignia
Dates	1 January 1960 – present
Country	United States
Branch	United States Army
Type	Army Service Component Command
Role	Theater army
Size	~106,000 soldiers (includes Army Japan and Eighth Army)
Command structure	United States Indo-Pacific Command
Garrison	Fort Shafter, Hawaii, U.S.
Current commander	GEN Charles A. Flynn
Notable commanders	John E. Hull, Walter T. Kerwin Jr., Frederick C. Weyand, John W. Foss, James T. Hill, John M. Brown III, Robert L. Caslen, Vincent K. Brooks

United States Army Pacific. It is the Army Service Component Command for the United States Indo-Pacific Command, the nation's oldest and largest Combatant Command. Headquartered at Fort Shafter in Hawaii, it is responsible for all United States Army operations across the Indo-Pacific region, an area encompassing 36 nations and over half the world's population. The command prepares and provides trained, ready land forces to support the National Defense Strategy and uphold security commitments to allies and partners.

History

The command's origins trace to early 20th-century formations like the Hawaiian Department, established to defend the Territory of Hawaii. Following the Attack on Pearl Harbor and during the Pacific War, it was redesignated as the United States Army Forces, Central Pacific Area, playing a pivotal role in the Central Pacific campaign under commanders like Robert C. Richardson Jr.. After World War II, it evolved through several designations, including the United States Army, Pacific during the Korean War and Vietnam War, where it provided critical support from bases in Japan and Okinawa. It was formally established under its current name in 1960, with its history deeply intertwined with major conflicts and the enduring U.S. security commitments in Asia.

Organization

As a theater army, it exercises operational control of assigned forces and provides administrative and logistical support across the region. Its structure includes both assigned active component units and a significant number of aligned Army National Guard and United States Army Reserve forces through the Army Total Force Policy. Key enabling components include the 311th Signal Command (Theater) and the 8th Theater Sustainment Command, which provide critical communications and logistics. The command also maintains a close integration with the I Corps ("America's Corps"), which serves as its primary warfighting headquarters.

Area of responsibility

Its vast area of responsibility spans from the western coasts of the Americas to the western border of India, and from the Arctic to Antarctica. This includes the entirety of the Pacific Ocean, the Indian Ocean, and strategic hotspots like the Korean Peninsula, the Taiwan Strait, and the South China Sea. The region contains key treaty allies such as Japan, South Korea, Australia, the Philippines, and Thailand, as well as emerging partners like India, Vietnam, and Indonesia.

Major subordinate commands

Its major subordinate commands form the core of its forward-deployed presence. United States Army Japan commands Army forces across the Japanese archipelago, while the Eighth United States Army is the premier warfighting command on the Korean Peninsula. United States Army Alaska, now part of the command, focuses on Arctic operations. Other critical elements include the 94th Army Air and Missile Defense Command for integrated air defense and the United States Army Pacific Intelligence Directorate.

Exercises and operations

The command executes a robust schedule of joint and multinational exercises to build interoperability and deter aggression. Major annual exercises include Cobra Gold in Thailand, Balikatan in the Philippines, Super Garuda Shield with Indonesia, and Yama Sakura with Japan. It plays a leading role in Operation Pathways, a series of continuous activities reinforcing the U.S. posture in the region. Historically, it has been integral to operations from Korea and Vietnam to recent humanitarian missions following disasters like the 2004 Indian Ocean earthquake and tsunami.

List of commanders

Commanders have historically been four-star generals, though the billet was reduced to three-star for a period. Notable commanders include early leaders like John E. Hull and Walter T. Kerwin Jr., who shaped the Cold War posture. Renowned wartime commanders include Frederick C. Weyand, later Army Chief of Staff. Recent commanders such as Vincent K. Brooks, Robert B. Brown, and the current commander, Charles A. Flynn, have focused on implementing the Joint Concept for Integrated Campaigning and countering challenges from the People's Liberation Army.

Category:United States Army service components Category:Military units and formations in Hawaii Category:Military units and formations established in 1960