見第三帝國內幕(Inside the Third Reich)第304頁:

The communication apparatus at headquarters was remarkable for that period. It was possible to communicate directly with all the important theaters of war. But Hitler overestimated the merits of the telephone, radio, and teletype. For thanks to this apparatus the responsible army commanders were robbed of every chance for independent action, in contrast to earlier wars. Hitler was constantly intervening on their sectors of the front. Because of this communications apparatus individual divisions in all the theaters of war could be directed from Hitler's table in the situation room. The more fearful the situation, the greater was the gulf moden technology created between reality and the fantasies with which the man at this table operated.