Operation Concertina (i)

'Concertina' (i) was a British unrealised plan by Vice Admiral the Lord Louis Mountbatten’s Combined Operations Headquarters within the context of the 'Constellation' (i) plan for the recapture of the German-occupied Channel Islands (1943).

'Concertina' (i) was concerned with the liberation of the island of Alderney, but was never considered a serious candidate for implementation.