E-100, Gerat 383 super heavy tank. Rare film of the Panzerkampfwagen E-100 super heavy prototype. E-100 was designed as a parallel development to the Porsche 205 Maus, being built by Adlerwerke of Frankfurt. The incomplete and turretless hull was discovered at Henschel’s Haustenbeck testing facility when it was overrun by US troops in April 1945. When Haustenbeck was handed over to the British Army shortly afterwards, the hull was brought back to the UK for evaluation. Weighing 140 tons, the E10