In 1979, a secret unit was established by the most gifted minds within the US Army. Defying all known accepted military practice - and indeed, the laws of physics - they believed that a soldier could adopt the cloak of invisibility, pass cleanly through walls and, perhaps most chillingly, kill goats just by staring at them.

Entrusted with defending America from all known adversaries, they were the First Earth Battalion. And they really weren't joking. What's more, they're back and fighting the War on Terror.

The Men Who Stare at Goats reveals extraordinary - and very nutty - national secrets at the core of George W. Bush's War on Terror. With first-hand access to the leading players in the story, Ronson traces the evolution of these bizarre activities over the past three decades, and sees how it is alive today within US Homeland Security and post-war Iraq.

Why are they blasting Iraqi prisoners-of-war with the theme tune to Barney the Purple Dinosaur? Why have 100 de-bleated goats been secretly placed inside the Special Forces command centre at Fort Bragg, North Carolina? How was the US Military associated with the mysterious mass-suicide of a strange cult from San Diego? The Men Who Stare At Goats answers these, and many more, questions.

Jon Ronson is an award-winning writer and documentary maker. He is the author of many best-selling books, including Frank: The True Story that Inspired the Movie, Lost at Sea: The Jon Ronson Mysteries, The Psychopath Test, The Men Who Stare at Goats and Them: Adventures with Extremists. His first fictional screenplay, Frank, co-written with Peter Straughan, starred Michael Fassbender. He lives in London and New York City.