Gerd von Rundstedt — German Soldier born on December 12, 1875, died on February 24, 1953

Karl Rudolf Gerd von Rundstedt was a German Field Marshal (Generalfeldmarschall) during World War II... (wikipedia)

If was, increased by a lack of railways in Russia - for bringing up supplies to our advancing troops.
Another adverse factor was the way the Russians received continual reinforcements from their back areas, as they fell back. It seemed to us that as soon as one force was wiped out, the path was blocked by the arrival of a fresh force.
It is madness to attempt to hold. In the first place the troops cannot do it and in the second place if they do not retreat they will be destroyed. I repeat that this order be rescinded or that you find someone else.
The responsibility of commanding the invasion fell to me, and the task was assigned to my Army Group.
The German Air Force was not sufficient to protect the sea crossing on its own. While the leading part of the forces might have landed, there was the danger that they might be cut off from supplies and reinforcements.