 40 of the actors who were portraying Rangers were sent to Fort  Benning to attend a two week crash course in becoming Rangers, 15 of  the actors portraying Delta Operators were sent to Ft. Bragg and  were given a two week Commando Course by members of the 1st Special  Warfare Training Group. Ron Eldard went to Fort Campbell and was  given a lecture by several Little Bird and Black Hawk pilots,  including Michael Durant, about flying and and the battle.