In August 1915 Llandudno was the scene of a rescue attempt by a German U-boat. Three German officers, Herman Tholens, Heinrich von Hennig and Hans von Heldorf, were prisoners at Dyffryn Aled Prisoner of War camp, Llansannan. They used coded messages to arrange a rendezvous with a U-Boat off the Great Orme. This tribute was suggested by Thomas Jeffers, the Home Front Museum, Llandudno, and the attendees of the Research Afternoon, 5 June 2018. In association with CONWY County Borough Council.