War-nut is a wall-nut wearing a bullet-proof helmet. The helmet absorbs 100 bites so it takes 172 bites or 2 smashes to destroy the nut. While the helmet is on bullets will not effect it so it is good against a Machine gunner zombie.
It's a Wall-nut wearing an enlarged Gatling Pea's helmet. Also it looked angry like a Tall-nut.
It's name sounds a lot like Wall-nut.