TheCodeBreakers
Atlantic. It was to be now or never, and the imperial government lashed
its weary troops and hungry civilians for the supreme effort that was to
bring final victory.
It was no less clear to the Allies that Germany planned to launch a
climactic offensive in the spring. There were many signs—the new cipher
itself was one. The question was: Where and when would the actual blow
fall? The German high command, recognizing the incalculable military
value of surprise, shrouded its plans in the tightest secrecy. Artillery was
brought up in concealment; feints were flung out here and there along
the entire front to keep the Allies off balance; the ADFGVX cipher, which
had reportedly been chosen from among many candidates by a
conference of German cipher specialists, constituted an element in this
overall security, as did the new Schliis-selheft. The Allies bent every effort
and tapped every source of information to find out the time and place of
the real assault