The actual Barry Winchell was six and one half years younger than Calpernia Addams, but in the film the age difference is almost exactly reversed, Lee Pace, the actor who portrays Calpernia, is six years younger than Troy Garity, the actor who portrays Winchell.
The patch worn on the shoulder of every soldier in the film is not the patch of the 101st Airborne Division (Air Assault). The only time the actual 101st patch is shown is during the stock footage of soldiers marching across the parade ground at Ft Campbell. The patch can be seen on the large banner.
The character of Ginger is played by female impersonator Tulsi Balram who would go on to become Miss Continental 1998. Her character is based on a cross between Calpernia's then roommate Chyna (Charles Tubbs) and Regine Phillips who has tried unsuccessfully to win the Miss Continental title.