Quisling, Vidkun Abraham (1887–1945), a Norwegian army officer. His name became synonymous with traitor in 1940, when he aided the German invasion of Norway. He used his authority as an army officer to order the surrender of certain key positions and provided the Germans with important information on Norway's defenses. The Germans rewarded Quisling by making him “President Minister" in 1942. After the collapse of Germany, Quisling was convicted of treason and executed.

Quisling entered the Norwegian army in 1911 and served as a military attaché in Russia, 1918–19, and in Finland, 1919–21. In 1931–32, Quisling was minister of defense in the Norwegian government. He formed a Norwegian fascist party in 1933.