The Dropship is exactly as it's named implies, a dropship. It can be used to load some ground units and then unload them wherever you want them to. The Dropship is very that useful and can be really helful if you unload them behind the enemies defenses. If the Dropship is destryed so are the people inside of it. The Dropship is best used to transport people around your base or to move an attack force over a ledge or a crack.