This is very hard to achieve I think.
Read the book about the 3rd SS division(soldiers of destruction)
In 1942 they defended an area that existed largely of swamps.
They held out for 6 months and when they were finally rescued 60% of the division was killed.
All the original combat teams were almost destroyed and their ranks were filled up with
clerks,doctors,mechanics,cooks and so on.
Most of the remaining men were hungry,sick and starving but they refused to surrender I don't think that a division made up largely out of conscripts could do that.
So incorporating such a feature in this game looks impossible to me.