Presents an overview of various types of codes and ciphers used throughout history, famous cryptologists, and how to create your own secret messages.

Describes how the American military in World War II used a group of Navajo Indians to create an indecipherable code based on their native language.

An examination of one of the most important yet underexplored aspects of World War II--intelligence--shows how espionage successes and failures by the United States, Britain, Russia, Germany, and Japan influenced the course of the war and its final outcome.

Between Silk and Cyanide presents the memoir of the man who transformed code-making and code-breaking for the Special Operations Executive in World War Two. Leo Marks later went on to become an award-winning scriptwriter.

Friedman had a rare talent for spotting patterns and solving puzzles, and these skills led her to become one of the top cryptanalysts in America during both World War I and World War II. In 1916 she had been hired by an eccentric millionaire to prove that Shakespeare's plays had secret messages in them, and learned much about code breaking. Greenfield shows that Friedman and her husband, William, played a major role decoding messages during WWI and...

1940. As England prepares to fight the Nazis, three very different women answer the call to Bletchley Park, where the best minds in Britain train to break German military codes. Osla puts her fluent German to use as a translator of decoded enemy secrets. Mab works the legendary codebreaking machines and looks for a socially advantageous husband. Beth's shyness conceals a brilliant facility with puzzles, and she becomes one of the Park's few female...

"From spy missions to code breaking, this richly illustrated account of the covert operations of World War II takes readers behind the battle lines and deep into the undercover war effort that changed the course of history. From the authors who created Eyewitness to World War II and numerous other best-selling illustrated reference books, this is the shocking story behind the covert activity that shaped the outcome of one of the world's greatest conflicts--and...

Through narrative nonfiction, tells about the men who used the Navajo language to create a successful, top-secret code that was never cracked by enemy forces.

During the winter of 1952, British authorities entered the home of mathematician, cryptanalyst and war hero Alan Turing to investigate a reported burglary. They instead ended up arresting Turing himself on charges of "gross indecency," an accusation that would lead to his devastating conviction for the criminal offense of homosexuality - little did officials know, they were actually incriminating the pioneer of modern-day computing. Famously leading...