Nautilus

"Well, since World War III got worse, Miles has got a Nautilus on our very own hands. It seems it'll be a bane to the nautical tyrants of the Coalition of the Red Star. Wasn't it this darn cool?"

--Su Ji-Hoon, Miles to the Future

The Nautilus is a ranged unit of the Oceanic Future from Forge of Empires.

In When the Cold Breeze Blows Away, they are futuristic robotic snails that serve for the Future Navy.