The Army is concurrently implementing several major force structure and basing initiatives, including Base Realignment and Closure, Grow the Force, and Army Modularity. The resulting large increase in personnel associated with these initiatives at many installations has required and will continue to require significant facility planning and construction to meet needs. GAO was asked to (1) describe the Army's investment in domestic facilities to meet the needs associated with the initiatives; (2) determine the extent to which the Army's facility planning systems are complete, current, and accurate; and (3) assess whether stationing information has been provided to installations far enough in advance to permit facility planning and acquisition to accommodate arriving personnel. To address these objectives, GAO reviewed relevant documentation; analyzed budget documents, information from Army planning systems, and facility criteria standards; visited installations; and interviewed relevant officials. GAO is recommending improvements to the Army's facility planning systems and actions to improve communication and timeliness of stationing information provided to affected installations. DOD concurred with all of GAO's recommendations.