Operation Regenbogen (ii)

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This was a German undertaking schemed by Grossadmiral Karl Dönitz, Adolf Hitler’s successor as the German leader and commander-in-chief of the German navy, for the scuttling of all warships and U-boats at the end of World War II in Europe (30 April/4 May 1945).

The order was forcibly rescinded as a condition of the German surrender agreement, but was nonetheless carried out by the crews of many of the U-boats already in German ports and bases.