Secret Days

Book excerpt: The Bletchley Park memoir of Lord Asa Briggs will be one of the most important documents to be published in 2010. Lord Briggs has long been regarded as one of Britain's most important historians. He has never, however, written about his time at Bletchley Park. The publication, which coincided with Lord Briggs 90th birthday, is a meticulously researched account of life in Hut Six, written by a codebreaker who worked there for five years alongside Alan Turing and Gordon Welchman. In addition to discussing the progress of the Allies' code-breaking efforts and their impact on the war, Lord Briggs considers what the Germans knew about Bletchley and how they reacted to revelatory memoirs about the Enigma machine which were not published until the 1970s. Briggs himself did not tell his wife about his wartime career until the 1970s and his parents died without ever knowing their son's contribution to the wartime effort.