Fort Shafter is the headquarters of the United States Army Pacific Command, the Major Command of U.S. Army forces in Asia and the Pacific Basin, and is the oldest military base on Oahu, at over 100 years. Fort Shafter is part of US Army Garrison-Hawaii, which also includes Schofield Barracks, and Pohakuloa Training Range communities. Although these communities are geographically separate, the garrison is organized, staffed, and operates as a single post.