The Crawler can secure a fortified position deep underwater to automatically fire upon unsuspecting planes and even spaceships. It can also carry two infantry units unseen a great depths, creeping towards unsuspecting <l:6,105>Sea Colonies<e> to unload sudden invasions of death and destruction. It can even take on cities by itself, but it's not good at assaulting. Instead of infantry, the Crawler can alternatively carry <l:1,62>Nukes<e> to further increase chaos in the already troubled world. Its armoured body is unsuitable for shallow water though, much less for land.