The German army built a gun battery in 1942, 600 meters from the coast and in the middle of the Channel Islands, Guernsey. The gun battery consisted of four 150 mm. guns that were set in open cast ring positions with a 360° field of fire and a range of almost 25 km.
Behind the guns was built bunker with a Observation tower from were the fire from the four guns was to be led.
An identical battery was built at the same time in the western part of the island and was called Gun Battery Scharnhorst.
After the Allied landing in Normandy and subsequent conquest of the Cherbourg peninsula, it was decided to move the guns from the two batteries to the Channel Island Jersey.
Here they were set up in two new batteries, Schlieffen and Haeseler, both of which were constructed field-wise and there is therefore no traces for them today.
The relocations took place to reinforce the defense against the French coast, which had suddenly become enemy territory.
The ring positions were covered after the war, and are today together with the observation tower scattered between houses and fields.