Across the theater's 9,000 miles, USARPAC applies campaign-quality landpower from the west coast of the continental United States to India. With more than 107,000 Soldiers and Civilians, USARPAC is the Nation's largest Theater Army - from our headquarters at Fort Shafter, Hawai'i to locations across Alaska, Washington, Guam, American Samoa, Saipan, Japan and the Republic of Korea.