A unit like this fighting against the Soviet Union would do anything to avoid capture.
They know certain death is the only outcome.
So I give these troops a +1 morale bonus when fighting Soviet forces.
These troops don't have the firepower of regular German infantry.
But I have given them machine guns and a few anti-tank rocket launchers.
Troops morale is higher if they can see the flag.
Flag troops are often easy to knock over, so they get a larger base.