Hans Dieter Berenbrok grew up in Hamburg and joined the Kriegsmarine in 1943, where he served as a naval intelligence officer (radio officer) and held the rank of Oberfähnrich at the end of the war. After the war, Berenbrok worked as a news editor and reporter for various newspapers and magazines. In 1953 he published under the pseudonym Cajus Bekker his first book, Battle and Decline of the Navy. A documentary report in words and pictures, the contents of which he had gathered from numerous records in private hands and countless personal interviews, since German documents were still in the custody of the victorious powers.
The book was distributed in 1956 as part of a propaganda campaign by the government Adenauer along with other works to 460 youth villages and youth hostels free to "in the youth to promote the idea of defense and make it understand the classification of the new German armed forces in the defense alliance of the Atlantic Community.”
From 1955 Berenbrok was editor and editor for the naval program of Gerhard Stalling-Verlag (Oldenburg / Hamburg), where he also remained active as author Cajus Bekker. Berenbrok also used his reserve exercises (as Corvette Captain d. Res.) …
