“Following is laid down as guiding principle should one of our own units find itself compelled to answer the challenge of passing craft. To challenge in case of the Köln—‘H.M.S. Cairo’; then to order to stop—‘(1) Please repeat last signal, (2) Impossible to understand your signal’; in case of a warning shot—‘Stop firing, British ship, good friend’; in case of an inquiry as to destination and purpose—‘Going Bergen, chasing German steamers.’ ”
Then I would draw the Court’s attention to Document C-151, which for the purposes of the record will be Exhibit GB-91, which is a Dönitz order in connection with this operation. If the Court will observe, it is headed:
“Top secret, Operation Order—‘Hartmut.’ Occupation of Denmark and Norway.
“This order comes into force on the code word Hartmut. With its coming into force the orders hitherto valid for the boats taking part lose their validity.
“The day and hour are designated as Weser-Day and Weser-Hour, and the whole operation is known as Weser Exercise.
“The operation ordered by the code word has as its objective the rapid surprise landing of troops in Norway. Simultaneously Denmark will be occupied from the Baltic and from the land side.”
And there is at the end of that paragraph another contribution by Dönitz to this process of deception: