Career
After the war, he returned to civilian life, but had a role in preparations for the stay-behind effort in Norway. Heavy water sabotage
Poulsson served in the Norwegian Independent Company 1 (Norwegian: Kompani Linge) during After five days of struggling through snowstorms on skis, the team managed to join forces with the Grouse team, previously deployed in the area. The combined team succeeded in the destruction of heavy water equipment and stock at Vemork in February 1943.
Strømsheim was one of four who entered the actual factory building.
Operation Gunnerside was later claimed by Special Operations Executive leadership to be the most successful act of sabotage of the Second World War. lieutenant was presented to him by King Haakon at a ceremony at the training school STS 26 in Scotland, near Nethy Bridge.
Operation Fieldfare
Strømsheim died 10 November 2012, in Oslo, Norway, at the age of 101.