Herr Flick is still held in the dungeons, and if he cracks he can divulge that the painting of the Fallen Madonna have been copied. That´s why he must be rescued by Helga, von Smallhausen, and René - dressed as Himmler. The Colonel and the Lieutenant are ordered by the General to let Herr Flick die in a rescue attempt by the Resistance, but seeing the danger of getting caught in a crossfire, they dress up as Gestapo officers to rescue Herr Flick, only to find René chained up instead. (thetvdb.com)