Operation Oyster was carried out on the 6th December, 1942 by 2 Group RAF. Considered to be a notable success for the allies, it cost the Germans an estimated six months of lost production time at a critical point in the conflict. It is arguable, according to the authors, that the operation was in fact rather more significant than Operation Chastise, the Dambuster raid, while accepting that was a remarkable feat of arms. Operation Oyster struck at the very heart of what Churchill termed 't...