It’s called purging the ranks, and has been successfuly used by the likes of stalin, mao, and hitler to ensure a compliant fighting force, devoid of morals, loyal to the party, and willing to carry out orders without question. If you think the military won’t turn their guns on us civilians, the groundwork for making that scenario an inevitability is being put into place as we speak.
Of course it's happening. It HAS to happen for the soldiers to turn their guns on their fellow citizens.