Contractors made up half of deployed personnel in the Iraq War.

Evidence

By the second Gulf War, contractors represented roughly half of all deployed personnel in Iraq. Brown & Root, now known as KBR, employed more than fifty thousands people in the war zone—the equivalent of five divisions or one hundred army battalions. For most in the military, the days of peeling potatoes are long gone. — David Vine, Base Nation_ How U.S. Military Bases…, 684