The tunnel shivers and a human tooth falls into your coffee. You watch bitterly as the chunk of white bone bobs up and down in the black liquid, vaguely aware that somewhere high above you an artillery strike must be falling. Or perhaps something is walking across the blood soaked earth...something so large its shape is nothing but a hazy shadow in the smoke and mustard gas. You shiver involuntarily as the earth shakes again, more soil and hardened clots of blood showering down on your head from...