The horror of the Sardukar was in how a state leader could transform dissidents and derelicts (the product of the emperor’s own repugnant domestic policies) into a tool of command and control.
The horror of the Freman was in how a state leader could transform the desire for liberty and sovereignty into an empire-spanning blood drenched jihad.
Apply this to Russia/Ukraine (or Israel/Palestine or Ethiopia/Tigrey or North/South Sudan) and you see a host of disturbing parallels.
The longer and deeper the trauma of these conflicts, the more local people abandon their humanity in pursuit of victory.