Honestly probably one of the most sincere orchestrated themes for gamecube, you can really see the transition between each of the campaigns (My favourite is any of the themes on Xylvanian Terrirory, ie. Mission Intro 7, Road to Xylvania, Campaign Bonus 4)
Overall just a really good theme to listen to, I deeply recommend it for any military lovers (And goddamn Lord of the Rings fans, jesus the Iron Legion is basically Orcs!!)