World War II: Josef Terboven, Reichskommissar of German-occupied Norway, appoints Vidkun Quisling the Minister President of the National Government.

World War II or the Second World War was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks and aircraft played major roles, enabling the strategic bombing of cities and delivery of the first and only nuclear weapons ever used in war. World War II is the deadliest conflict in history, causing the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

Josef Antonius Heinrich Terboven was a German Nazi Party official and politician who was the long-serving Gauleiter of Gau Essen and the Reichskommissar for Norway during the German occupation.

Reichskommissar, in German history, was an official governatorial title used for various public offices during the period of the German Empire and Nazi Germany.

The occupation of Norway by Nazi Germany during the Second World War began on 9 April 1940 after Operation Weserübung. Conventional armed resistance to the German invasion ended on 10 June 1940, and Nazi Germany controlled Norway until the capitulation of German forces in Europe on 8 May 1945. Throughout this period, a pro-German government named Den nasjonale regjering ruled Norway, while the Norwegian king Haakon VII and the prewar government escaped to London, where they formed a government in exile. Civil rule was effectively assumed by the Reichskommissariat Norwegen, which acted in collaboration with the pro-German puppet government. This period of military occupation is, in Norway, referred to as the "war years", "occupation period" or simply "the war".