Cross of Iron Theme.
Once 'Hanschen klein' gets into my head it's a little tune that I just can't shake for a week or two.
YouTube - Cross of Iron
Always liked the 'sound' of The Deerhunter too.
'War themes' are quite odd of late, the (In my opinion) rather overblown style of soundtrack used on Saving Private Ryan, and carried onto Band of Brothers, seems to have made it impossible to screen any war drama without a very similar chord-heavy noise roaring in the background.
Cheers,
Adam.