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.

"Biography of Elizebeth Smith Friedman, an American woman who pioneered codebreaking in WWI and WWII but was only recently recognized for her extraordinary contributions to the field"--

"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...

"Discusses the heroic actions and experiences of the Navajo code talkers and the impact they made during times of war and conflict"--

In the South Pacific during World War II, a group of Navajo Marines sent secret messages for the Allies using a code based on the Navajo language. Learn more about these heroes, whose unbreakable code helped win the war.

On his 81st birthday, without explanation, Karen Fisher-Alaniz's father placed two weathered notebooks on her lap. Inside were more than 400 pages of letters he'd written to his parents during WWII. She began reading them, and the more she read, the more she discovered about the man she never knew.

They began to meet for lunch every week, for her to ask him questions, and him to provide the answers. It was through this process that she discovered

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"Cryptology was key to the success of the Battle of Iwo Jima during World War II. Learn more is this introduction the Navajo and why and how their language was well-suited to being used for coded messages."--

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.

The world's great economic powers aligned into two opposing forces in World War I. Although still in its infancy by modern standards at the onset of the conflict, intelligence gathering and espionage would ultimately tip the balance. Readers learn how new technology exploded and resulted in developments in cryptography and surveillance as both sides raced to crack the codes and win the war.

"Set against the backdrop of the Cold War, the conflict in Vietnam was much more than a battle between Vietnamese and American forces. Although the fighting may have taken place in monsoon-swept cities and booby-trapped jungles, the Vietnam War was fought on a much larger scale. Spies were active on all fronts, including within the United States itself. Readers will explore how technology and tactics not only shaped the Vietnam War, but changed the...