Here is a Stalingrad 42 question

[Dog Soldier]

If the Germans had fuel problems and could not move their formations around so readily why not just FIX some of them in place for a day or so. This might just delay the mass concentration of German power long enuf for the Soviets to hold on to the initiative.

Not a bad idea. Timing of releases is tricky for a designer when going away from historical information like this. Then it could be the Russians who take advantage of Axis fixed units. IMHO, better to limit the Axis mobility by low fuel or low ammo or both to drop the morale rating enough so they are slow in moving. A higher break down value would be ideal. Unfortunately that idea would affect the relief forces the same way, not a good thing.

If you want to tinker with the releases en mass of the northern Red Armies, setting them up out of sight would work to prevent early releases. The Axis player would have to worry about a Russians' reaction to a northern thrust. I am sure if the Germans had tried to threaten the supply of the forces which crossed the Don in this way, the Soviets would not have blindly followed history, but would have adapted to the threat. Leave a few recon elements unfixed in the Russian northern armies to check and see if the Germans are still there...

Dog Soldier