:) Well, not that I want to defend the Wehrmacht in any way, but just, no. Plausible fiendish actions for Ludendorff to undertake:

- ordering guys like the protesting Captain and men who listen to him to lead the next hopeless charge where they're sure to get slaughtered; if they refuse, you haven have a rule-dictated reason to execute them, and these guys loved pointing to orders

- war profiteering

- ordering civilians to be executed as enemy agents

Implausible fiendish deeds: what he does in the movie. Ditto for the rest of the army being apparantly just okay with L. killing a whole room full of generals by gas without even bothering with a cover story that blames someone else for it.