another thing that worries me is these robot dogs.  one of them isn't really scary, but they wouldn't operate alone. send a few dozen of these at any enemy position and suddenly they're terrifying. they're low profile enough to be difficult to see, a couple a bound to slip through unnoticed and begin shooting, blowing up or whatever they need to do to clear that position. they don't fear death like humans do, they'd be very good at reaching their target.
Japan