This generation is rightfully feeling like they're getting a sore deal.
So it could be:
- the native young population who are now flocking in the AfD
- the people fighting the AfD in the street
- the second generation immigrants born there
- the very recent immigrants
- a mix of all
Because the alchemy of creating a working army and "esprit de corps" is much harder than in a corporation. You cannot just take a modern managerial approach to creating an army.
A mix of all will end up obviously in a disaster but selecting on any group will end up in a civil war or coup.
I don't think that the social situation is as bad as you describe. I just think that people generally don't feel keen to put their life on the line for Germany.
Yes this what I am sincerely wondering: which group (however you want to define it) of relatively young people, do they believe they can leverage "to put their life on the line for Germany"?