“The disguise as British craft must be kept up as long as possible. All challenges in Morse by Norwegian ships will be answered in English. In answer to questions a text with something like the following content will be chosen:
“ ‘Calling at Bergen for a short visit; no hostile intent.’
“Challenges to be answered, with names of British warships:
“Köln—H.M.S. Cairo; Königsberg--H.M.S. Calcutta; Bremse—H.M.S. Faulkner; Karl Peters—H.M.S. Halcyon; Leopard—British destroyer; Wolf—British destroyer; S-boats—British motor torpedo boats.
“Arrangements are to be made enabling British war flags to be illuminated. Continual readiness for making smoke screen.”
And then finally the next order dated the 24th of March 1940, Annex 3, “From Flag Officer, Reconnaissance Forces; most secret.” Next page, page two: