"disposi" - 1 õppematerjal

TheCodeBreakers

and the Oberkommando der Kriegsmarine had come to depend on it. Suddenly, on August 20, as all England was bracing itself in its finest hour, and the sky above was streaked with contrails as the few earned their tribute from the many, the Admiralty, which had finally tumbled to the German cryptanalysis, changed its codes and ciphers. O.K.M. went deaf. The abrupt cutting off of quantities of information about British plans and disposi-  tions caused, a German said, "a great setback for German naval strategy." No longer could German vessels strike out at the greater British forces with foreknowledge or move deftly out of their way. British sea power rapidly gained its normal ascendancy. English ships shelled the invasion fleet in Channel ports. Air reconnaissance alone could not tell the Germans enough. The O.K.M., never very warm for SEALION, chilled still further. Eventually its coolness spread throughout O.R.W.,