I've listed Sands of Iwo Jima as his favorite movie though I've never seen it so I'll just have to trust whoever suggested it to me.

NIGHTMARE MODE: If not a war movie, it would have to be something action-y with explosions and guns which might still qualify as war but I don't know if any other sort of movie would hold Soldier's attention and I'm not real familiar if that genre of movie existed before the 70's and OH MY GOD MY HEAD HURTS.