'Crofton' was a British operation by the Special Operations Executive to protect power, repeater and telecommunications stations around Mo i Rana in Norway at the time of Germany’s surrender (March/May 1945).

The four-man party of E. Juden, L. Schanke, O. Mjelde and B. Bjølset departed Stockholm in neutral Sweden during March to travel overland to the 'Sepals III' base.