Marching Orders: The Untold Story of How the American Breaking of the Japanese Secret Codes Led to the Defeat of Nazi Germany and Japan

by Bruce Lee

Within the next few days, the judicious use of Ultra allows the British to sink four of the six freighters carrying vital supplies to Rommel, who launches his attack on the new, untried English commander hoping that he can refuel his panzers on captured British stocks, which is no way to go into battle. For two days Rommel tries to seize the Alam Halfa Ridge, only to suffer horrific losses inflicted by British antitank guns that are perfectly positioned thanks to Montgomery’s use of Ultra. Finally, on September 1, Rommel is forced to withdraw. The retreat signifies the end of Germany’s attempts to march on Egypt and the Suez Canal.