Produced in association with the Imperial War Museums, London, this book includes codebreaking puzzles, general military knowledge quizzes and an exploration of cryptography, providing something for both history buffs and fans of lateral-thinking puzzle books.

Can you crack the toughest codes of the 20th century?

Imperial War Museums have created a cryptographic challenge worthy of the finest minds of Bletchley Park and Room 40. This is your chance to prove that you have the code-breaking skills to rank among them.

There are hundreds of head-scratching ciphers included in Code-Breaking Puzzles certain to keep you entertained for hours, alongside 20th-century military history puzzles and crosswords perfect for the armchair general. For those who need a helping hand, the book also includes a brief history of cryptography, along with tips and tricks to help you make the connections you need to decrypt and solve the puzzles.

Whether you are a military history buff or a lateral-thinking lover, good luck: your country needs you!