In the Autumn of 1941 he was sent on a six month posting to Jersey and Guernsey. The German high command became convinced, from the accuracy of British bombing of military targets on the Channel Islands, that detailed information was being transmitted to the British from the islands. They were probably right. Details of resistance activity within the German forces occupying the islands are sketchy, but the radio operator Kurt Hälker was part of it. Early in 1942 the Germans sent a Corvette Captain to investigate. Hälker later recalled that when he arrived on his brief but intense intelligence gathering mission this man was the most senior German naval officer on the islands, which was eloquent testimony to the priority that the Nazi authorities attached to his mission.