Castaways in question : a story of British naval interrogators from WW1 to denazification /Derek Nudd.

"They thought their war was over when they were hauled from the sea. Instead, captive German sailors were fed, clothed, and brought to London where they experienced British naval intelligence officers' deft skill at extracting vital information from their heads. Here we follow the naval interrogators' growing confidence and expertise from their pioneering first steps in World War I to their role in dismantling one of the most vicious regimes the planet has ever seen."--Provided by the publisher.