Le Verfügbar aux enfers, unfinished operetta-revue On October 21, 1943, Germaine Tillion was deported to the NN (Nacht und Nebel) concentration camp at Ravensbrück, 90 km north of Berlin. She was placed in the Verfügbar category (from the German verfügbar: available), prisoners not assigned to a work Kommando, but "available" for the worst chores. In October 1944, in a carefully hidden notebook, she wrote a three-act operetta, Le Verfügbar aux enfers. The musical work unexpectedly plunges the spectator into the seemingly joyful world of an operetta, but with an increasingly heavy atmosphere. However, with the increasing difficulties of the winter of 1944-1945, Germaine Tillion did not complete the third act of the operetta.