Channel Islands Occupation Society

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The Channel Islands Occupation Society (CIOS) is a voluntary organisation that seeks to study all aspects of the German occupation of the Channel Islands and to raise awareness and educate the public about the occupation during the Second World War.^[2] There are two branches, one in Jersey and the other in Guernsey, that take turns in publishing the Channel Islands Occupation Review. The CIOS manages many German fortifications and archives on both islands.