Movie scores are usually great for this kind of thing (lol, like they are supposed to be 'cinematic' for some reason...). Hans Zimmer is my favorite composer, but also Richard Williams (i think thats the name) does good stuff. Between the two of them, you pretty much have the soundtrack of every major hollywood picture! I'm not sure what "ww2 style" music is, but their stuff is very dramatic and good for OFP.