@Galex:
Historically speaking,Supply situation can hardly be changed by OKH or STAVKA
There was quite some unused potential in the Axis logistics in 1941, which was wasted by bad organisation, which must be mostly attributed to Hitler's inability or reluctance to set up a unified and efficient command and control system on the highest level.
The motor pool (Großtransportraum) and the railway (Reichsbahn) were not under a unified logistical command, but separated. Cooperation between the two branches was possible, but not anchored in the organisation.
Preparation of economical exploitation of the country used resources better used for the Wehrmacht.
The advancing army used and destroyed resources which were essential for the transportation system, like wooden walls for protection from snow, which were used for heating.
The constant changes and uncertainty of objectives also contributed to friction in the system.
Sources:
The German Empire and the Second World War, Vol. 4, the section on logistics and the description of operations in 1941+the part on the planning and the economical exploitation.
Local population was not sufficiently integrated in the transport system for political and ideological reasons.
Logistik im Russlandfeldzug, die Rolle der Eisenbahn bei der Planung, Vorbereitung und Durchführung des deutschen Angriffes auf die Sowjetunion.