History of Guernsey St Saviour, St Pierre du Bois, Ste. Marie du Catel, and the Vale. The loss of Normandy by King John in 1204 isolated the Channel Islands from mainland Europe. Each time England and France went to war over the coming centuries, trade to and from the Channel Islands was restricted or banned and even when not officially at war, the island was repeatedly attacked by continental pirates and naval forces. Fortifications were improved in the Channel Islands, manned by professional soldiers and the Guernsey militia who would help to defend the Island for the next 600 years. Service was compulsory
German fortification of Guernsey Guernsey comprising: Commanding Officer of the German garrison, Lieutenant-General Graf von Schmettow, nephew of Gerd von Rundstedt commander of OB West (Commander-in-Chief West), ordered the writing of a 500-page book that described the fortifications in great detail, illustrated with maps, photographs and coloured drawings. A copy was destined for Hitler. The chapters from the original book have been reproduced in a set of ten paperbacks. "Festung Guernsey" (fortress Guernsey). Whether the Islands were impregnable was never tested, except for "Battery Bluecher" in Alderney. Alderney was considered too well-protected against aircraft attack so HMS Rodney was tasked with shelling it. "Rodney"