Why the Nazis didnt destroy all the important train tracks that the Russian Red Army used in WWII?

was this difficult to do really? how much the Red Army used the rails to provide them with soldiers and equipment and why same wasnt done to German rails? as seen at even the end of the war that trains were still transporting tanks to germany and thought this very strange. please explain what you... show more was this difficult to do really? how much the Red Army used the rails to provide them with soldiers and equipment and why same wasnt done to German rails?

as seen at even the end of the war that trains were still transporting tanks to germany and thought this very strange.

please explain what you can.


thanks for your answers!
Update: ALSO, HOW MUCH BOTH RUSSIA, BRITAIN AND GERMANY DEPENDED ON THESE RAILS TO TO TRANSPORT OIL? AND OTHER IMPORTANT RESOURCES? WHEN THIS BEGAN AND HOW THIS WOULD HAVE DESTROYED THIS SUPPLY? WHAT ABOUT TRAINS TRACKS IN THE MIDDLE EAST? WHY THEY WERE NOT ALSO TARGETED? WHICH COMPANIES HAD SET THESE UP AND HOW... show more ALSO, HOW MUCH BOTH RUSSIA, BRITAIN AND GERMANY DEPENDED ON THESE RAILS TO TO TRANSPORT OIL? AND OTHER IMPORTANT RESOURCES? WHEN THIS BEGAN AND HOW THIS WOULD HAVE DESTROYED THIS SUPPLY?

WHAT ABOUT TRAINS TRACKS IN THE MIDDLE EAST? WHY THEY WERE NOT ALSO TARGETED? WHICH COMPANIES HAD SET THESE UP AND HOW DEFENDED THEY WERE? (AS THIS WAS WHERE THE FUEL FOR THE ENTIRE WAR ENGINE CAME FROM.)
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