The Norwegian Campaign (9 April to 10 June 1940) was a Second World War campaign fought in Norway between the Allies and Germany after the latter's invasion of the country. In April, the United Kingdom and France came to Norway's aid with an expeditionary force. Despite moderate success in the northern parts of Norway, Germany's invasion of France in May eventually compelled the Allies to withdraw and the Norwegian government to seek exile in London. The campaign ended with the occupation of Norway by Germany, and the continued fighting of exiled Norwegian forces from abroad. The 62 days of fighting made Norway the nation that withstood a German invasion for the second longest period of time, after the Soviet Union.