Post-Vietnam strategy replaced citizen armies with market armies.
Evidence
Transformations already under way in the “modes of war” accelerated. The new strategy increased the weight of highly capitalized warfare: there was a definite break from the existing model of conscription and an increasing reliance on private contractors and the weapons for remote warfare. The old model of an army of citizens gave way to a “market army.” — Grégoire Chamayou, A Theory of the Drone, 598