C. S. Lewis is universally recognized as one of the intellectual giants of the twentieth century. Despite his sophistication, Lewis was able to reach a vast popular audience during his lifetime and continues to attract thousands of new readers every year. But when during the most desperate years of World War II he was asked by the BBC's "Home Service" to give radio addresses about Christianity, he was dismissed by critics as a layman who was unqualified to tackle such weighty issues. To the annoyance of some of his colleagues at Oxford Lewis proved to be enormously persuasive, and his talks were eventually published as Mere Christianity, which ranks as one of the great classics of religious literature. BBC journalist Justin Phillips's "C. S. Lewis Goes to War" is a fascinating look at a how these talks were created and the enthusiastic response they generated at a time when bombing in London caused many radio stations to be evacuated. This book reveals a previously untapped and rich vein of Lewis's life and work that will intrigue his millions of fans.