In 3237 the Battle Fortress was disguised as a smaller island near Cocoa Island, with an under-tunnel built beneath the seabed to connect it to the island, and allow easy access to the cavern network below. Eventually, Miles "Tails" Prower, T-Pup, and Antoine & Bunnie Rabbot D'Coolette infiltrated the fortress through the under-tunnel and destroyed a storage bay while fighting Speedy in Fukurokov's Mole Mech. This caused enough damage to the Battle Fortress for Armada troopers to evacuate to the upper decks while the ship took off to avoid flooding, and then flew away from Cocoa Island, dropping debris and venting fuel. As the Battle Lord punished Dr. Fukurokov by ordering him to make all the repairs alone, the Battle Birds remained unaware that the Babylon Rogues' zeppelin was on an inter