Operation Regenbogen (U-boat)

Operation Regenbogen (German: Regenbogen-Befehl, "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 Allied onslaught. The Soviets had captured Berlin, and on 30 April Hitler had committed suicide.