Operation Regenbogen may refer to:
*In 1942
Operation Regenbogen (Arctic) was an unsuccessful sortie against Arctic convoy JW 51B, which led to the Battle of the Barents Sea
*In 1945
Operation Regenbogen (U-boat)
Operation Regenbogen (, "Rainbow Order") was the code name for the planned mass scuttling of the German U-boat fleet, to avoid surrender, at the end of World War II.
Background
At the beginning of May 1945 Nazi Germany was collapsing under the ...
was the codename for the plan by Admiral Karl Dönitz to scuttle Kriegsmarine warships, particularly U-boats, at the end of the war
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