WHY ISNT IT THE 15TH DECEMBER ALREADY!!!
In the air combat one I linked a few posts ago?If so then you are wrong, thats Ride of the Valkyries by Wagner.
While it is true that John Williams receives credit for the score of the "Star Wars Theme," there is no doubt that he borrowed heavily from Wagner's "Ride of the Valkyries," so much so that had Wagner been alive at the time of the movie's release, there is a very good chance he would have been able to successfully sue for copyright infringement.