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| World War II in Norway | |
|---|---|
| Conflict | Norwegian Campaign |
| Partof | World War II |
| Date | 9 April 1940 – 10 June 1940 (campaign); occupation 1940–1945 |
| Place | Norway, Skagerrak, North Sea, Narvik, Trondheim, Oslo |
| Combatant1 | Nazi Germany, Wehrmacht, Kriegsmarine, Luftwaffe |
| Combatant2 | Norwegian Army, Norwegian Navy, Royal Norwegian Air Force, United Kingdom, France, Poland |
| Commander1 | Adolf Hitler, Wilhelm Keitel, Nikolaus von Falkenhorst, Erich Raeder, Hermann Göring |
| Commander2 | Haakon VII of Norway, Oscar Torp, Carl Gustav Fleischer, Harald Sunde, Winston Churchill |
| Strength1 | German forces in Norway |
| Strength2 | Allied and Norwegian forces |
| Casualties1 | German casualties |
| Casualties2 | Allied and Norwegian casualties |
World War II in Norway
The Norwegian campaign began with a surprise German invasion in April 1940 and led to five years of occupation, resistance, collaboration, and eventual liberation in May 1945. The conflict drew in actors such as the United Kingdom, France, Soviet Union, United States, and distinct Norwegian institutions and personalities including King Haakon VII, Vidkun Quisling, Norwegian resistance movement, and Shetland Bus. Strategic interests in iron ore, naval bases, and Arctic access made Norway a focal point of Atlantic Wall planning and Battle of the Atlantic operations.
Norway declared neutrality at the outbreak of World War II, influenced by historical experiences from the First World War and diplomatic precedents like the Treaty of Versailles, while royal and parliamentary figures such as King Haakon VII and parties including the Labour Party and Conservative Party debated defence policy. Strategic geography—ports at Narvik and Trondheim, fjords such as Ofotfjord, and proximity to Great Britain and Soviet Union—attracted attention from Nazi Germany and United Kingdom. Norwegian industry such as the Norwegian iron ore trade with Germany via Luleå and shipping firms including Wilhelm Wilhelmsen factored into British planning like Plan R 4. Intelligence services including SIS and Abwehr monitored Norwegian politics and naval movements, while political actors such as Vidkun Quisling and Nasjonal Samling positioned themselves amid rising tensions.
On 9 April 1940 the Wehrmacht launched Operation Weserübung, seizing ports and airfields in coordinated assaults on Oslo, Kristiansand, Bergen, Trondheim, and Narvik. German naval units including elements of the Kriegsmarine and Kampfgeschwader 30 secured control of the North Sea and convoys, while Allied forces under commanders like Claude Auchinleck and Norwegian commanders such as Carl Gustav Fleischer counterattacked in the Norwegian Campaign. The sea-borne battles for the heavy cruiser Blücher in the Oslofjord and the naval actions around Namsos and Narvik involved surface combatants, coastal artillery, and airpower from the Luftwaffe and Royal Air Force. Political consequences included the flight of King Haakon VII and the establishment of a German-friendly administration led by Josef Terboven and collaborators like Vidkun Quisling.
Following the campaign, the Reich installed a civilian Reichskommissariat Norwegen under Josef Terboven and attempted to integrate Norway into German strategic plans including the Atlantic Wall and Arctic operations. Norwegian collaborators such as Vidkun Quisling and members of Nasjonal Samling occupied ministerial roles, while institutions like the SS and Gestapo enforced security and anti-resistance measures. Economic exploitation involved state-owned enterprises like Norsk Hydro and shipping assets requisitioned from companies including Fred. Olsen & Co.; labor and resource allocation intersected with German firms such as Krupp and naval logistics for the Battle of the Atlantic. Legal measures invoked emergency decrees and courts such as German military courts to suppress dissent and implement labor mobilization.
Norwegian resistance encompassed armed groups, clandestine networks, and intelligence rings including Milorg, XU, Shetland Bus, and Kompani Linge operating with training from Special Operations Executive and SIS. Sabotage operations targeted facilities like the Vemork heavy water plant and Norsk Hydro in the Operation Gunnerside operation, while intelligence on convoy routes aided Allied efforts in the Battle of the Atlantic and Arctic convoys to Murmansk. Prominent figures included Max Manus, Gunnar Sønsteby, Leif Tronstad, and Signe Sejersen, who coordinated with British handlers and Norwegian exile institutions such as the Norwegian government-in-exile in London to smuggle refugees via the Shetland Islands and conduct assassinations and sabotage against occupation forces.
Allied interventions included British and French expeditions, Polish units at Narvik, and later Soviet Union operations in Finnmark during 1944–45, while naval battles, convoy escorts, and air interdiction shaped the campaign. The Battles of Narvik involved multinational forces and influenced the early course of the Norwegian Campaign, and operations such as Operation Archery at Lofoten Islands showcased joint commando raids by No. 10 (Inter-Allied) Commando. Norwegian forces in exile formed units within Free Norwegian Forces and fought in theaters including the North Atlantic and the Mediterranean Sea, supported by Allied logistics from bases in Scotland and Shetland.
Occupation altered daily life across cities like Oslo, towns such as Tromsø, and rural districts in Northern Norway through rationing, censorship by entities like the Rikskommissariat, and cultural policies overseen by collaborators and German authorities. Churches including the Church of Norway and cultural figures such as Knut Hamsun faced contested positions, while newspapers like Aftenposten and Arbeiderbladet navigated censorship and underground presses. Economic controls hit fisheries, shipping, and industry, affecting firms such as Norsk Hydro and fishermen in the Lofoten fishing grounds; social consequences included deportations to camps managed by the SS and labour conscription affecting workers across sectors.
The German capitulation in May 1945 followed Allied advances and Soviet operations in the north, leading to the return of King Haakon VII and the restoration of the Storting and the Norwegian government-in-exile. Postwar legal purges prosecuted collaborators including Vidkun Quisling in trials that invoked legislation such as treason statutes and led to sentences including capital punishment. Reconstruction priorities included rebuilding infrastructure in Finnmark, economic recovery with aid from allies and initiatives involving NATO alignment and industrial modernization at sites like Rjukan, while memorialization of wartime events fostered museums and memorials honoring figures from the resistance, naval veterans, and civilian victims.