 Complete the following phrase:  In November 1943 the Arctic Convoys restarted. On 19 December 1943 Grand Admiral Karl Dönitz submitted a request to Hitler to allow Scharnhorst to attack the next convoy sailing through the Barents Sea. On 25 December 1943 Dönitz ordered Ostfront to commence. Admiral Fraser C-in-C of the Home Fleet, alerted by Norwegian resistance information to the possibility of an interception by Scharnhorst, prepared a trap for the German warship. On 25 December Scharnhorst sailed to intercept the British convoy, 