United States Indo-Pacific Command

The United States Indo-Pacific Command (USINDOPACOM), formerly known as the United States Pacific Command (USPACOM), is the unified combatant command of the United States Armed Forces responsible for the Indo-Pacific region.

It is the oldest and largest of the unified combatant commands. Its commander, the senior U.S. military officer in the Pacific, is responsible for more than 375,000 service members as well as an area that encompasses more than 100 million square miles (260,000,000 km²), or roughly 52 percent of the Earth's surface, stretching from the waters of the West Coast of the United States to the east coast maritime borderline waters of India at the meridian 66° longitude east of Greenwich and from the Arctic to the Antarctic. In 2018, the United States Pacific Command was renamed the United States Indo-Pacific Command in recognition of the increasing connectivity between the Indian and Pacific oceans.

The Indo-Pacific Command consists of:

• A headquarters organization.
• Five subordinate service component commands (U.S. Army Pacific, U.S. Marine Forces Pacific, U.S. Pacific Fleet, U.S. Pacific Air Forces, and U.S. Space Forces Indo-Pacific).
• Three subordinate unified commands (U.S. Forces Japan, U.S. Forces Korea—which includes Special Operations Command Korea—and Special Operations Command Pacific).
• Two direct reporting units (U.S. Pacific Command Joint Intelligence Operations Center and the Center for Excellence in Disaster Management and Humanitarian Assistance).
• Two standing joint task forces (Joint Interagency Task Force West) and Joint Task Force Red Hill.

The INDOPACOM headquarters is the Nimitz-MacArthur Pacific Command Center, located on Camp H. M. Smith in Hawaii.