In late 1941, Adolf Hitler ordered Oberkommando der Marine (OKM German Navy high-command), to plan an operation to return the ships to German bases, to counter a possible British invasion of Norway. A meeting was held in Paris on 1 January 1942, for the final planning of the operation. The short route up the English Channel was preferred to a detour around the British Isles, to benefit from surprise and from air cover by the Luftwaffe and on 12 January 1942, Hitler gave orders for the operation to be conducted.[2]