The Prism tank was developed by Professor Albert Einstein, who based the artillery unit off the designs of the Prism Tower base defense structure. It was first deployed by the Allies in ‘Operation: Free Gateway’ after Special Agent Tanya destroyed the Psychic Beacon in St. Louis. In that operation, the Prism Tank made short work of the Soviet base and the Allies quickly recaptured the city. The Prism Tank was available for use by the Allies for the rest of the Third World War. A squad of Prism Tanks was Chronoshifted by the Chronosphere into Moscow to support the Allied assault on the Kremlin.