The goal of Norway in exile was to liberate Norway from the German occupation force. The Norwegian exile government established itself in London. In Sweden the exile organs grew to an extensive administrative body that handled the stream of refugees, did intelligence work and educated personnel for military service. The work of the air force was organized with a training unit in Canada and a combat unit in Great Britain. The navy was fully mobilized at the invasion April 9 1940. Nortraship administrated the big Norwegian merchant fleet outside German-controlled areas. The main offices were in London and New York.