Vidkun Quisling proclaimed himself prime minister and appointed a government with members from the National Unity Party. He was quickly set aside and replaced by Josef Terboven, but reinstated in 1942. The Norwegian Campaign continued in Northern Norway and the government fled to London on 7 June. The German occupation resulted in a brutalization of society and 30,000 people were imprisoned. 55,000 people joined the National Unity Party, which became the only legal party. But the nazification process failed after the Supreme Court resigned and both organized sports and bishops boycotted the new regime. A resistance movement was established and was coordinated from London from 1943. Stokker reports that hostile humour against the Germans helped maintain morale and build a wall against collaboration. Jokes made the rounds dripping with contempt for the oppressors, ridicule of Nazi ideology, stressing the cruelty of the Nazis and mocking their inflated self-image. People on the street asked, "Do you know the difference between the Nazis and a bucket of manure? The bucket." In Post Office lines they explained, "It's rumored that we're getting new stamps bearing Quisling's likeness, but distribution has been delayed because no one knows which side to spit on." The jokes worked to educate Norwegians about the occupation, and encourage a sense of solidarity. At the time of German surrender on 8 May 1945, there were 360,000 German soldiers in the country.