What is the fine-grained topic of the following text: Morten Tyldum’s The Imitation Game tells the story of how mathematician Alan Turing helped break The Enigma Code – the unbreakable code devised by the Germans during World War II – enabling England and her allies access to the intelligence necessary to win the war. Only return the topic.
Alan Turing's role in breaking The Enigma Code in World War II as portrayed in The Imitation Game.