Hitler always tried to make us fight for every yard, threatening to court-martial anyone who didn’t. No withdrawal was officially permitted without h… - Gotthard Heinrici

When the Russians were found to be concentrating for an attack, I withdrew my troops from the first line under cover of night to the second line—usually about 2 kilometres behind. The result was that the Russian blow hit the air, and its further attack did not have the same impetus.

The German defeat in the East was, in my opinion, due to one main reason—that our troops were compelled to cover immense spaces without the flexibility, in the command, that would have enabled them to concentrate on holding decisive points. Thus they lost the initiative permanently.

It was like hitting an empty bag. The Russian attack would lose its speed because my men, unharmed, would be ready. Then my troops on sectors that had not been attacked would close in and reoccupy the original front lines.