On 1 May, Rattenhuber led one of the ten groups escaping from the Reich Chancellery and "Führerbunker". Two of the other main groups were led by SS-"Brigadeführer" Wilhelm Mohnke and Werner Naumann. Most, including Rattenhuber, were taken prisoner by the Soviets on the same day or the following day. Rattenhuber was taken to Moscow, where on 20 May he gave a description of the last days of Hitler and the Nazi leadership in the bunker complex. The text of this was kept in the Soviet archives until it was published by V.K. Vinogradov in the Russian edition of "Hitler's Death: Russia's Last Great Secret from the Files of the KGB" in 2000.