April 1940, Norway German troops enter the country, and within  weeks military defeat turns into a system of   control built on fear, arrests, and repression.  As occupation settles in, Norwegian society   fractures.

 While many people turn silently toward  resistance, others choose collaboration, drawn by   power, protection, or opportunity. German security  services quickly learn that repression works   best when betrayal comes from within, and they  begin to rely on Norwegian traitors to identify,   infiltrate, and destroy opposition. From this  cooperation emerges a small but ruthless circle   of collaborators who believe themselves protected  by German authority and untouchable by law.

 Their   work of deception, torture, and murder will scar  the whole of Norway including its resistance   movements, and when the war ends many of them  will pay for their crimes with their lives.   This group will become known as the Rinnan gang. The Rinnan gang was formally created in March  1942 as Sonderabteilung Lola, meaning Special   Department Lola, and attached to the German  SD, the Nazi Security Service responsible for   intelligence gathering and political repression in  occupied Europe during the Second World War which  

started on 1 September 1939. This group was led by  Henry Rinnan, a Norwegian who worked closely with   German security officers. During post-war trials,  Rinnan, who was recruited already in June 1940 by   the Gestapo, the Nazi secret police, claimed that  he was an SS officer.

 In reality he was more of   an intelligence agent rather than a full member  of the SS, the infamous Nazi paramilitary unit.   At the end of the day, this distinction mattered  little – Rinnan was granted wide freedom of action   and ran his group according to his own rules  with only one goal – to destroy the resistance.  The Rinnan gang´s task was not to  openly fight with Norwegian resistance,   but the slow destruction of resistance through  infiltration, denunciation, terror and torture.  

The group operated especially across the territory  of central Norway. Henry Rinnan himself wanted to   expand the activity of his gang also in Oslo, the  Norwegian capital, but was prevented from doing   so by his German superiors.

 Over the course of  the war, around seventy Norwegians were involved   in Rinnan´s network, although the active core  rarely exceeded thirty people at any given time.   From 1943 onward, many members were former  frontline fighters who had returned from German   military service deeply shaped by violence,  strict discipline, and ideological obedience,   men accustomed to using force without restraint  and mercy.

 Rinnan used in his activities also   people who believed that they were serving  the resistance cause, but in reality, they   were deceived and worked for traitors and Nazi  occupiers in destroying the Norwegian resistance.  The Rinnan gang quickly became infamous for  brutality so extreme that even German officers   sometimes intervened.

 On several occasions,  the Gestapo demanded that a German officer   be present during interrogations because they  feared Rinnan, or other members of his gang,   would torture prisoners to death before any  useful information could be obtained. This   alone revealed how far his methods went beyond  what even the Nazi occupiers considered useful.  In its early phase, the gang focused on  identifying resistance members and reporting   them to German liaison officers.

 Those denounced  were arrested, interrogated, and usually sent to   prisons or concentration camps such as Falstad  in central Norway, while others were executed   without trial. Families of the resistance fighters  were left without explanations, and fear spread   through workplaces and neighbourhoods. As Rinnan  proved himself effective and ruthless, he was also   allowed to conduct interrogations himself and  the torture of his fellow citizens soon became   routine work for him.

 Prisoners were beaten,  threatened, deprived of sleep, and subjected   to humiliation meant to destroy their dignity.  Violence was not used only to extract information,   but to break people completely and to send  the warning far beyond the interrogation room.   The goal was domination and terror and  during the war several hundred Norwegians   were tortured, and it is believed that  the group killed more than 80 people. 

The most destructive weapon of the Rinnan  gang was infiltration. Members approached   people they suspected of opposing the Nazi  occupation under false names and identities.   They presented themselves as resistance  supporters, shared stories of hatred for the   Germans, and gradually gained trust.

 They attended  meetings, carried messages, and shared risks to   appear credible. Over time, they collected names,  addresses, courier routes, and meeting places.   In some cases, they actively encouraged illegal  actions against the Nazi occupiers so that   the arrests of the resistance fighters could  later be justified with direct proof of their   anti-German activity. This method allowed entire  resistance networks to be dismantled from within.  

The result was devastating. Resistance groups  that believed themselves secure were suddenly   destroyed in coordinated arrests, often after  months of careful manipulation and observations   by the Rinnan gang and Nazi security forces. From September 1943, the gang operated from its   main headquarters at Jonsvannsveien 46 in the  city of Trondheim.

 The villa was requisitioned   by the Germans after the occupation, and its  basement was converted into prison cells and   interrogation rooms. Rinnan named the basement  Bandeklosteret, meaning The Gang Monastery.   Behind this mocking name stands a brutal reality.  In the building prisoners were isolated, beaten,   and tortured.

 Interrogations were prolonged and  deliberately cruel, stretching over hours or   days. Several people died under torture in the  basement. Hundreds passed through these rooms,   many emerging permanently broken in body or mind.  The house became one of the most feared places in   occupied Norway, a symbol of what awaited those  who were betrayed. One of the most infamous acts   of brutality took place in March 1945, just a  few months before the end of the war.

 A member   of the gang, Hans Birger Egeberg had tortured a  resistance fighter for 36 continuous hours, with   blows, whippings, and kicks. The victim was forced  to roll in broken glass and at one point, Egeberg   seared a swastika into his back with a hot iron.

 Violence was not limited only to a captured member   of the resistance. The Rinnan gang also murdered  its own when they were seen as threats to their   activities or to Rinnan himself. In December  1942, Bjarne Kristensen was murdered because   Rinnan feared he might defect and his body was  dumped in the Trondheimsfjord. Marino Nilsson,   an experienced infiltration agent who had  previously worked successfully for the Germans,   came into conflict with Rinnan and was perceived  as a rival.

 He was beaten to death and later found   dumped at sea near the city of Ålesund in western  Norway. In July 1944, Joralf Borgan who internally   opposed Rinnan was shot six times, and his body  was thrown into the sea outside Trondheim during   an internal purge in the gang. These killings  revealed the true nature of the organization.   Loyalty offered no protection and fear ruled  inside the gang just as it ruled over its victims. 

The gang’s actions deeply damaged resistance  efforts across central Norway. Entire escape   routes were exposed, including attempts to  flee to Britain by sea. Groups preparing   to escape were infiltrated, arrested, and  destroyed before they could act. Dozens of   people were taken into custody who never reached  safety and instead died in captivity from abuse,   illness, or execution.

 Families were left without  answers, and communities learned that even trusted   acquaintances, neighbours, or colleagues could  be agents. The psychological impact was immense.   Suspicion spread everywhere, and resistance  work became even more dangerous and isolating.  The Norwegian resistance did not remain  passive. In December 1944, Ivar Grande,   Rinnan’s deputy commander and a central  figure in interrogations and torture,   was killed while he was cycling  home by the Norwegian resistance. 

Yet by this stage, the Second World War was  turning decisively against Germany and its allies,   and panic began to spread inside the gang itself.  As defeat approached, discipline collapsed.   Finn Hoff, who had participated in executions  of the members of the resistance during the war,   took his own life on 1 January 1945.

 In May 1945,  as parts of the gang attempted to flee toward   Sweden with hostages, Karl Dolmen and Ingeborg  Schjevik, his fiancé, committed suicide when they   were surrounded by the Norwegian resistance. On 26  April 1945, Marie Arentz, who previously worked as   courier for a Rinnan gang, was killed in the  gang headquarters when she and her boyfriend   Bjørn Bjørnebo attempted to escape the gang and  flee to Sweden.

 The killing of its own members,   carried out when German defeat was already  inevitable, showed how far the group had fallen.   Eliminating witnesses and maintaining  control mattered more than survival itself. When the Second World War ended in Norway in May  1945, surviving members of the Rinnan gang were   arrested. Some were captured while attempting  to flee, others were discovered in hiding.

 All   of them were accused of treason and trials that  followed in 1945 and 1946 exposed the full extent   of infiltration, torture, and murder carried  out by members of the gang under Nazi occupation   against the resistance movement. Testimonies  which described beatings, psychological abuse,   and killings shocked Norwegian society and in  reaction they demanded that it was necessary   to deal with traitors and active agents of the  Nazi security forces.

 Legal proceedings against   the group unfolded in 1945 and 1946, resulting  in seven life terms and twelve death verdicts,   two of which were later commuted to life  imprisonment. Ten men: Henry Rinnan, Bjarne   Jenshus, Aksel Mære, Harry Rønning, Harry Hofstad,  Olaus Hamrun, Per Bergeen, Kristian Randal,   Harald Grøtte and Hans Egeberg were executed.

 Executions were carried out at the Kristiansten   Fortress in Trondheim, which became a symbol  of post-war justice. Henry Rinnan himself   was executed there on 1 February 1947. The legacy of the Rinnan gang remains one   of the darkest chapters in Norwegian history  and it demonstrated how occupation, ideology,   and personal ambition could turn ordinary  people into brutal instruments of terror.

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