PRIVATIZING THE MILITARY
CONTRACTORS OUTNUMBER SOLDIERS IN WAR ZONES
In the Middle East in every year from 2008 to 2017, private contractors outnumbered soldiers on the ground, sometimes by  as much as a 3:1 margin. Private contractors are not subject to American or military law. The deaths and injuries of private contractors are not tracked.
MOST OF THE DEFENSE BUDGET GOES TO CORPORATIONS, NOT THE MILITARY
The top five private contractors (noted above) inked contracts with the U.S. government for over $110 billion (2016). Russia spent $69 billion on defense; Germany spent $41 billion. Official U.S. defense expenditures totaled $570 billion, not including (untracked) billions from the Overseas Contingency Operations account.
The president can send PSCs into battle at will.
Using professional contractors allows a government to implement foreign policies without having to convince the general public about the worthiness of a cause. Using private contractors does not require conscription of citizens or the mobilization of soldiers.  The number of private contractors is never included in troop counts, so thousands of private contractors can show up to fight without appearing in official documents.