Bjarne Winter Thorsen (9 January 1922 – 15 February 2001) was a Norwegian resistance member during World War II and later a naval officer.
When World War II reached Norway on 9 April 1940, with the German invasion, Thorsen was a student in secondary school.
[4] The radio communication post "Theta" was established on 4 December 1941, with its headquarters at the famous seaside location Bryggen.
[1] Among other things, "Theta" identified the presence of the German battleship Tirpitz in Norwegian waters, a highly important contribution to the Battle of the Atlantic.
After a request from Edward Victor Appleton,[7] Thorsen helped Dahl and his family flee to the United Kingdom in April 1942 on the vessel Borghild.
[5] German authorities finally unveiled "Theta" in October 1942, while conducting a razzia towards Bryggen, but most of the members managed to flee.
[4] In 1990, he published the book Usynlige soldater, about the Secret Intelligence Service agents of Norway, together with Bjørn Rørholt.