Your battalion’s on the march, there are snipers around every corner and you’ve forgotten to pack your sandwiches. This is the grim reality of modern warfare. Now you can experience it for yourself as the hardened battle-troopers we lovingly call Cannon Fodder cock their rifles, prime their grenades and march off into battle once more. They won’t all come back, but that means more sarnies for the rest of us, so chin-up.