Black Flag

On the eve of Germany's surrender in May 1945, Grossadmiral Karl Dönitz commanded thousands of loyal and active men of the U-boat service. Still fully armed and unbroken in morale, enclaves of these men occupied bases stretching from Norway to France, where cadres of U-boat men fought on in ports that defied besieging Allied troops to the last. At sea U-boats still operated on a war footing around Britain, the coasts of the United States and as far as Malaya.

Following the agreement to surrender, these large formations needed to be disarmed - often by markedly inferior forces - and the boats at sea located and escorted into the harbours of their erstwhile enemies. Neither side knew entirely what to expect, and many of the encounters were tense; in some cases there were unsavoury incidents, and stories of worse. For many Allied personnel it was their first glimpse of the dreaded U-boat menace and both sides were forced to exercise considerable restraint to avoid compromising the terms of Germany's surrender.