In a modern world where morality has lost its value, in a world where POTUS makes claims to beliefs in illegal acts, and numerous military personal as well as law enforcement entities agree with him, it is incumbent on civilians to remain vigilant.
Historically the military has remained aloof to political changes, but in a highly polarized arena, in a world fraught with dangers, in a world where the POTUS is incompetent, might some senior officers in collusion with cabinet level generals decide a streamlined unity executive branch would be far more effective than a democracy? Would their personal loyalty transcend their oath to the Constitution? I don't know.