Decisions by the military services on where to base their force structure can have significant strategic, socioeconomic, and cost implications for the Department of Defense (DOD) and the communities surrounding the bases. Each service uses its own process to make basing decisions. The House Committee on Armed Services directed GAO to review the services' basing decision processes. GAO examined the extent to which (1) the services have comprehensive processes in place that are designed to result in well-informed basing decisions and (2) DOD exercises management control of these processes. GAO reviewed and analyzed DOD and service guidance, studies, and relevant documents on implementation and oversight of the services' basing processes. GAO recommends that the Navy better link its basing guidance documents and ensure they adequately address management control, and the Secretary of Defense identify a lead office for oversight and establish guidance on the consideration of departmentwide priorities as part of the services' basing decision processes. DOD concurred with two, partially concurred with two, and nonconcurred with one of the recommendations.