Zeppelins were huge airships invented by humans in the 20th century. They were mostly used as transport, but also had military uses.
The First Doctor and Susan Foreman mentioned having observed a Zeppelin air raid during World War I. (TV: Planet of Giants)
In Pete's World, Zeppelins covered the skies of London in February 2007 and were owned by the richest businessmen. (TV: Rise of the Cybermen)
A Zeppelin owned by John Lumic transmitted a signal to Londoners' EarPods, which forcibly brought the humans to Battersea Power Station to be upgraded. Jake Simmonds and Mickey Smith tricked a Cyberman into punching the transmitter controls, releasing the humans from being control. This Zeppelin was later used by the Tenth Doctor, Rose Tyler and Pete Tyler as a means of escape from an exploding Cyber-factory. (TV: The Age of Steel)
One account says that the Preachers used an armed Zeppelin to free Paris from Cyberman control. The Zeppelin used its weaponary to destroy Cybermen on the streets whilst retrieving civilians and scientists. The Zeppelin finally transmitted the code which disabled the Cyberman emotional inhibitor and destroyed the Cyber-factory. (GAME: Save Paris)
However, another account suggests Zeppelins weren't used in the liberation of Paris. (GAME: Cyber Assault)
