The United States Pacific Command (USPACOM) Area of Responsibility (AOR) encompasses about half the earth's surface, stretching from the waters off the west coast of the U.S. to the western border of India, and from Antarctica to the North Pole. There are few regions as culturally, socially, economically, and geo-politically diverse as the Asia-Pacific. The 36 nations that comprise the Asia-Pacific region are home to more than 50% of the world's population, three thousand different languages, several of the world's largest militaries, and five nations allied with the U.S. through mutual defense treaties. Two of the three largest economies are located in the Asia-Pacific along with ten of the fourteen smallest. The AOR includes the most populous nation in the world, the largest democracy, and the largest Muslim-majority nation. More than one third of Asia-Pacific nations are smaller, island nations that include the smallest republic in the world and the smallest nation in Asia.
USPACOM is one of six geographic Unified Combatant Commands of the United States Armed Forces. Commander, U.S. Pacific Command (CDRUSPACOM) is the senior U.S. military authority in the Pacific Command AOR. CDRUSPACOM reports to the President of the United States through the Secretary of Defense and is supported by four component commands: U.S. Pacific Fleet, U.S. Pacific Air Forces, U.S. Army Pacific, and U.S. Marine Forces, Pacific. These commands are headquartered in Hawai'i and have forces stationed and deployed throughout the region.
U.S. military and civilian personnel assigned to USPACOM number approximately 330,000, or about one-fifth of total U.S. military strength. U.S. Pacific Fleet consists of approximately 180 ships (to include five aircraft carrier strike groups), nearly 2,000 aircraft, and 140,000 Sailors and civilians all dedicated to protecting our mutual security interests. Marine Corps Forces, Pacific possesses about two-thirds of U.S. Marine Corps combat strength, includes two Marine Expeditionary Forces and about 85,000 personnel assigned. U.S. Pacific Air Forces is comprised of approximately 43,000 airmen and more than 435 aircraft. U.S. Army Pacific has more than 60,000 personnel assigned, including five Stryker brigades. Of note, component command personnel numbers include more than 1,200 Special Operations personnel. Department of Defense Civilians employees in the Pacific Command AOR number about 38,000. Additionally, the U.S. Coast Guard, which frequently supports U.S. military forces in the region, has approximately 27,000 personnel in its Pacific Area.
USPACOM protects and defends, in concert with other U.S. Government agencies, the territory of the United States, its people, and its interests. With allies and partners, USPACOM is committed to enhancing stability in the Asia-Pacific region by promoting security cooperation, encouraging peaceful development, responding to contingencies, deterring aggression, and, when necessary, fighting to win. This approach is based on partnership, presence, and military readiness.
USPACOM recognizes the global significance of the Asia-Pacific region and understands that challenges are best met together. Consequently, USPACOM will remain an engaged and trusted partner committed to preserving the security, stability, and freedom upon which enduring prosperity in the Asia-Pacific region depends.