Alan Turing and the Enigma Code

For decades, the story of Bletchley Park has occupied a powerful place in the public imagination: brilliant codebreakers, impenetrable secrecy, decisive intelligence, and a handful of iconic figures said to have changed the course of World War II. Yet the very secrecy that protected Britain’s signals intelligence success also allowed rumors and legends to flourish. 

In Alan Turing and the Enigma Code: Secrets, Lies and Myths of Bletchley Park in World War II, Joel Greenberg examines twenty myths that have shaped the modern understanding of Britain’s wartime codebreaking center. He considers why these stories emerged, how they survived, and sets the record against the available evidence. The result is not a dismissal of Bletchley Park’s achievement, but a clearer account of it. 

Greenberg’s subjects range from the familiar to the surprising. He revisits the claim that Alan Turing broke the “Enigma code” and helped develop Colossus, separating Turing’s real wartime contributions from later embellishment. He also investigates stories involving Churchill’s supposed knowledge of the Coventry raid, secret tunnels to the Park, pigeons carrying resistance messages, battleship Bismarck, Pearl Harbor, postwar Enigma secrecy, and the Apple logo. 

Drawing on official records, veterans’ accounts, technical evidence, and the long afterlife of wartime secrecy, Greenberg shows how myth can preserve history even as it distorts it.