The book does a great job to taking a complex, and messy, narrative and shaping it for the reader to understand. It was amusing to read how an obscure, but genius, cryptographer working in a dank room had far reaching consequences on the other side of the world without anyone knowing about it.
The day to day lives of the fighting men in the unforgiving Libyan dessert were tough. Not only fighting heat and exhaustion, but the British Army Dessert Rats, the Australians and New Zealanders were battling the Dessert Fox (Rommel). Rommel used what he knew about other generals to his advantage and the results were German victories.
The story moves on to 1943 where the Allies believe that Italy will be a piece of cake and they could move on the Germany. Italy did surrender but the Nazis kept on fighting. The book ends after the battles in Naples and Salerno where the Allies paid a high price for the victory and the beginning of the plan to attack the French coast.