I guess one of the not so many retreats accepted by Hitler was the operation Buffalo:

During World War II the name Büffel Bewegung (Buffalo Movement in German) was given to a series of local retreats conducted by the German Army on the Army group Center area during the period 1-22 March 1943. This movement eliminated the Rzhev Salient and shortened the front by 230 kilometers, saving twenty-one divisions for use in the operation Zitadelle.

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