Modern Warfare

Spying and spy technology has evolved from sending signals through handkerchiefs and cracking the code of the Enigma machine to current intelligence techniques that rely on satellite imagery and monitoring of cellphone and internet communications. With case studies and hundreds of photographs, Hidden Secrets is an intriguing look at all these surveillance techniques, spy technology and the spies themselves.

In this breakthrough study, the preeminent war historian John Keegan goes to the heart of a series of important conflicts to develop a powerful argument about military intelligence. In his characteristically wry and perceptive prose, Keegan offers us nothing short of a new history of war through the prism of intelligence. He brings to life the split-second decisions that went into waging war before the benefit of aerial surveillance and electronic communications.