The Germans chose to deploy an encirclement on the Eastern Front; on the Western Front, they could only opt for a strategic contraction to cope with the offensive from the Britain-France-Australia Three Nations.
Strategic contraction meant that they had to reluctantly give up vast swaths of land in Northern France, and even Paris had to be handed over to the Frenchmen.
That was an unavoidable decision, as the Frenchmen were very persistent about Paris. If the Germans were to engage in a fight to the death over Paris, it would tie down over 2 million German soldiers.
For Germany at that time, this was simply impossible, let alone 2 million troops, they could not even afford a million.
Therefore, urban cities such as Orleans, Paris, Amiens, and Lans were included in the list of territories the Germans planned to abandon.