The DIA and DIC provide military intelligence to warfighters , defense policymakers and force planners within the Department of Defense and the United States Intelligence Community , in support of U.S. military planning and operations and weapon systems acquisition . The DIA and Defense Intelligence Community provide military intelligence to warfighters , defense policymakers and force planners within the Department of Defense and the United States Intelligence Community , in support of U.S. military planning and operations and weapon systems acquisition .