Battle of Hedgewick's World of Wonders
The Battle of Hedgewick's World of Wonders was a battle between human forces led by the Eleventh Doctor and Clara Oswald and the Cybermen on Hedgewick's World of Wonders. During the battle, the Cybermen's goal was to escape the planet where they had been left a thousand years before to recover from damage inflicted during the Cyber-Wars while the heavily outnumbered humans attempted to foil their plans.
During the battle, the Cybermen held a significant advantage in numbers and also the fact that their Cyber-Planner Mr Clever was trying to take control of the Eleventh Doctor.
The battle eventually ended when the man known to the participants as Porridge was revealed to be Emperor Ludens Nimrod Kendrick Cord Longstaff XLI who had fled to get away from the pressures of being Emperor. Porridge was able to destroy Hedgewick's World and the Cybermen on it with a planet-imploding bomb while transporting the survivors to safety. However, a single Cybermite survived the battle undetected. (TV: Nightmare in Silver)