"The original timetable called for the launching of the campaign in May [1941], with the objectives to be reached in five months—that is, in October. But the campaign did not begin until late June, bringing the terminal date into November. Originally, Hitler, the C in C, and the chief of the general staff agreed that wherever they stood in November, they would close down operations. However, they gambled with the weather, which in the late autumn was favorable, just as it was to Napoleon in 1812, and kept saying, ‘We can risk it’. Then came the bitter weather, and the German armies started to retreat."