It's Hard Charge To The Front by Teknoaxe.
Well I heard this in the game but its not the correct one i'm looking for, how do you upload mp3 files in here so I can show you better? It might have mixed the numbers in your "fight" files and I have mine on 18 which is probably not the same music as yours despite having the same number. Listing all the "fight" song name would also work as well so I can test all of em.