Now that I think of it, there´s a cool German Trash Metal Band called
Sodom (link)Of course it´s about 16 years since I really last heard them but I have them in good memory.
One song is even called Bombenhagel, then there´s Agent Orange, Persecution Mania, Ausgebombt and more I think..
Check there site for lyrics. But since the Lead Singer calls himself Tom Angelripper, don´t excpect any deepeer thoughts inside the lyrics
Actually I think One from Metallica is the best War based song I know, maybe because I also watched the movie. Very moving