"How did real-life spies communicate in secret? Readers get a sneak peek at real spies and the gear they used to complete their missions!"--

"Being a political spy can be a very dangerous job. From undercover work to wire-tapping, readers will learn all about espionage and the spies of the political underworld"--

"Gives readers a thrilling, behind-the-scenes look into how World War I spies gathered information for the Allied and Central powers. Learn about the tools that daring spies used during this conflict, and how spies such as Louise de Bettignies and Edith Cavell worked in secret to help their side win the war. Additional features include a Fast Facts spread, critical thinking questions, a phonetic glossary, resources for further study, and an index"--Provided...

"A hands-on guide to introduce kids to the fascinating world of secret codes and ciphers, Code Cracking For Kids explores many aspects of cryptology, including famous people who used and invented codes and ciphers, such as Julius Caesar and Thomas Jefferson; codes used during wars, including the Enigma machine, whose cracking helped the Allies gather critical information on German intelligence in World War II; and work currently being done by the...

"Gives readers a thrilling, behind-the-scenes look into how Civil War spies gathered information for the Union and Confederacy. Learn about the tools that daring spies used during this conflict, and how spies such as Harriet Tubman and Rose Greenhow risked their lives for the causes they believed in. Additional features include a Fast Facts spread, critical thinking questions, a phonetic glossary, resources for further study, and an index"--Provided...

"In the late 1930s...the world was again at war, hardly more than twenty years after the First World War had ended... Leaders of every country had to try to end the war as fast as possible and using whatever means they could. That meant coming up with secret operations meant to deceive, deflect, and confuse their enemies."--front flap