Name of this song?

It is used a lot in sports when the teams are coming out of the tunnels, kickoff in football games, or when the lights go dim during NBA games and the higlights on the jumbotron play. It starts off quiet and gets louder... almost opera sounding. Sounds like it would be in a war movie (im pretty sure it was) and i know these arent the words but it almost sounds like one line goes THHIISS MILLLAA!! OOO AAHHH AHHH OHH AOOOOAHHHHH! You are my hero if you can figure this out with my lack of details haha. 10 points guaranteed