What does the fact that German armies were not prepared for the Russian winter indicate about Hitler's expectations for the campaign in the Soviet...

Hitler
launched the German invasion of the Soviet Union on June 22.  The fact that the armies were not
prepared for a Russian winter show that Hitler did not think that they would still be fighting
when winter came.  It shows that he thought they would win a quick victory.  Hitler was basing
this, presumably, on how easily his armies had defeated the Allies in the West.  What he was not
taking into consideration was how large Russia was in land area and how many Russians there were
to fight against his armies.  Therefore, he badly underestimated how easy it would be to defeat
the Soviets.