Supply chain (and training etc) issues are all available through the CM Scenario Editor.
Individual units can be rated for experience, motivation, fitness, leadership, supply, headcount, and the status of vehicles (destroyed, immobilized, etc.). These all affect behavior on the ground after the game starts.
Larger logistical issues can be reflected in these stats, although they cannot be changed (without further editing) in scenarios already available. I imagine scenario designers will be downgrading their Russians in future offerings.