In which conflict was the anti-demolition operation codenamed 'Operation Sunshine' carried out?

'Operation Sunshine' was an anti-demolition operation in occupied Norway from October 1944 to May 1945. It was planned by Norwegian military personnel in the United Kingdom in cooperation with British forces. It was part of an effort to protect essential installations and industry, in particular large power stations, against destruction in a possible 'scorched earth' action by the Germans towards the end of World War II.

'Operation Sunshine' was planned by Leif Tronstad from his position within the exiled Norwegian Ministry of Defence in London. An important goal was to protect the power plant industry in Norway, and the targeted operation area was chosen such that it comprised sixty percent of the energy supplies in Eastern Norway. This included power stations in the Rjukan district, Notodden, Kongsberg and Nore.

The various teams were assisted by specially-trained U.K. SOE (Special Operations Executive) operatives, and the SOE agents would cooperate with and develop existing groups already established in the districts. The groups would be supplied with weapon and provisions by air drops from allied aircraft, and provided with military instruction from the SOE members.

They were charged with defending vital infrastructure from damage or destruction by the German forces if and when they were forced to retreat from occupied Norwegian territory. In the face of the advancing Soviet troops, the defeated Germans only managed to destroy villages in the Finnmark area.