Slavery could, historically, be entered into voluntarily. John Stuart Mill wrote some interesting things about this. But clearly, this isn't the basis of my co

Slavery could, historically, be entered into voluntarily. John Stuart Mill wrote some interesting things about this. But clearly, this isn't the basis of my comparison. A soldier is completely subject to the arbitrary will of his superiors, without any real legal protections. See also: Ratio of reported rapes vs. prosecuted rapes, scandals of enforcement agents.