== Removed "The German tanks inability to traverse..." == 

 "The German tanks inability to traverse snowy terrain effectively may have slowed the relief attempts." Earlier version: The lack of cross country ability of German tanks in the snow may have slowed the relief attempts.  

 This sentence caught my attention due to a recent edit. I removed the entire sentence as the linked article does not support this. Please see: Operation Winter Storm 

 There is no mentioned in the linked article either to snow or terrain. Instead it talks about Soviet redeployments, their stiff resistance, and heavy losses of the relief forces.