In 1939, only a generation after the 'war to end all wars', the world found itself on the brink of conflict again. Discover the story behind one of the most destructive wars in history. From espionage, to battle tactics, code cracking, and heroism, uncover real-life facts that shocked and shaped the world. Find out: Why did war erupt again so quickly? How close did Britain come to being invaded? How did spies and double agents help to win the war? What was it like to be a child during the war? Packed full of incridible photographs, artifacts and original documents from The National Archives, World War II Unclassified is a true account of how this monumental war affected the world. [back cover].