What is a good song to use for a unit video montage?

I am asking for some recommendations. Next month, I am going to a reunion with Soldiers from my first unit where I served as a Lieutenant. I have volunteered to put together the video montage with all the old and new photos. However, I need a couple of songs to go with the pictures. What songs would you recommend? I am looking for something related to the military and something that will pump them up. Please help!