Hi Come-on,
I played WIR a few days ago for the first time and so I didn´t look much at the supply-system yet, because of checking the other features first. (I got my first problems with supply yesterday.)
You better take a look at the supply section at the manual.
I can´t explain it very well with my own words, so I copy&paste the Blitzkrieg part of the manual here:
Blitzkrieg
At the start of the 1941 Campaign the Axis
player receives the benefits from the special
Blitzkrieg rules. This represents the initial
preparation and stockpiling the Axis did
prior to launching Operation Barbarossa.
The base Supply Level for Axis rail during
June and July 1941 is 10 instead of 6. Rail
will also convert to Axis operation at SL
or higher instead of 4. The base Supply
Level in August 1941 is 8. Rail will convert
to Axis operation at SL 6 or higher. If the
Axis player is receiving HELP or MAX
HELP, then on all clear weather turns from
1941-1945, the Axis player receives the
Blitzkrieg Supply Level bonus of 10.
You said you´re near mogilev and so I think, you lost most of the supply-bonus of the first month. Perhaps the weather is bad too or you have problems with your supply lines.
But good luck anyway
