1st Division

The First Division are a fictional unit in the Japanese Self-Defense Force appearing in the manga and later anime Coppelion, were deployed in 2016 after a nuclear disaster reduced most of the Tokyo to a irradiated wasteland, to provide aid to the survivors. Tokyo, however, was quickly abandoned and cordoned off, however, leaving the First Division behind in the city. Since then, the First Division survived in Tokyo for twenty years, until 2036, when a special unit of genetically augmented humans immune to radiation, Coppelion, was deployed to look for survivors in the abandoned city. The First Division did not wish return, angered by their abandonment by the Japanese government, and instead, set in motion a plan for revenge. The First Division intend to capture the Coppelion to penetrate the radiation zone around the the Odaiba Nuclear Plant, the source of the disaster, and plant explosives on the lead-plated "sarcophagus" covering the reactor, releasing radioactive dust into the atmosphere, irradiating much of Japan, and possibly an even larger area.