The Channel islands were the most heavily fortified part of the ‘Atlantic wall’ (a line of massive defence works that ran from the baltics to spain). The channel islands were the only part of the British isles that German troops would set foot on, Hitler poured resources into defending the islands from British forces trying to re-capture them; the amount of resources and funds that he put in the islands far outweighed the genuine strategic value of them.

Batterie Lothringen was made so that it could cover the whole island at close range, it was made to mainly protect the south of the island it has an effective range of 14,000m and had 47 permanent implacements from artillery to flamethrowers.