The German assault on Denmark and Norway in April 1940 effectively cut off all surface communications between neutral Sweden and the Western Allies. Diplomats and VIPs still needed to travel to and from Sweden and exports of highly valuable goods needed to be maintained. To gain support for the war against an all-conquering Germany, it was also important to give Swedish public opinion the opportunity to read British newspapers and magazines. The only realistic way to maintain these links between Sweden and Britain was by air, and a service was immediately established by BOAC, operating...