Nacht und Nebel
The designated concentration camps were not classified as "KZ-Lager" by the Nazis, but rather as "Häftingslager" ("detainee camps") under the administration of the Nazi "security police," the SS and Gestapo. The Nazi authorities deported over 700 Jews from Norway to Auschwitz, over 500 "Nacht und Nebel" prisoners to Natzweiler; and thousands more to Sachsenhausen, Ravensbrück and other prisons and camps in Germany. Most of these were kept in Norwegian camps during transit.