Secret War, Spies, Codes and Guerrillas 1939–1945, HarperCollins Publishers, Max Hastings,Modern warfare,Military history, D-Day;double-agent;Churchill;spy;espionage;Bletchley;Operation Mincemeat;Patton;Ultra;military intelligence;Ben MacIntyre;enigma;MI5,, , United Kingdom, en-GBhttps://www.harpercollins.co.ukD-Day;double-agent;Churchill;spy;espionage;Bletchley;Operation Mincemeat;Patton;Ultra;military intelligence;Ben MacIntyre;enigma;MI5, [BLURB],[CITY],,books, ebooks, biblet, Book2look