This book tells the story of the second devastating conflict of the 20th century that tore the world apart – divided by international alliances and growing tensions between nations. Meet the key players who influenced the outcome of this global struggle. Explore major events such as the attack on Pearl Harbor, the Battle of Britain, the D-Day invasion, and the atomic bombs in Japan, and discover how clever code-breakers developed new technology to decipher hidden messages and gain military advantage over their enemies.