 The 23rd Airborne Division, XVII Airborne Corps and Fort Marshall are presumably based on the actual 82nd Airborne Division, XVIII Airborne Corps based at Fort Bragg, home of the airborne divisions and the United States Army Special Operations Command.In Season 7 Fort Marshall was merged with an Air Force base, mirroring the mergers of several Army posts with nearby Air Force bases as a result of the 2005 Base Realignment and Closure Commission.Mercer Army Medical Center is the fictional hospital on post where some of the characters worked.