My game with herroberst is over. As you see above my attempt to cut the east-west road was partially successful. I did not manage to cut his forces in two but I managed to block the road.
I pushed hard and suffered heavy losses, a lot of inf, 1 50mm ATG and 1 T-34. It was hard to advance against SMG ambushes and T-34s.
In exchange I managed to keep him on defensive. I killed 2 T-34s and 2 T-70s and scored 1 T-34 and 1 T-70 mobility kills. I am not sure if mobility kills count for anything in the campaign framework.