The debate on the effectiveness of Private Security Contractors (PSCs) in Iraq has been waged ever since their first appearance. Statists have argued that they are much less effective than regular troops, while neoliberals consider them an effective supplement to regular troops. However, so far, both schools alike have drawn on anecdotal evidence only; yet, such evidence is prone to a high margin of error and does not allow a comparison of different actors. This article addresses these shortfalls by providing hard data, drawn from the Wikileaks Iraq War logs data set, on the conduct of PSCs in Iraq and comparing their performance to that of regular troops, that is, the US and Iraqi armed forces. In general, if PSCs are co-deployed alongside regular troops and oversight is institutionalized, their performance supersedes that of poorly trained military personnel, such as the Iraqi military, and in many cases even that of the highly capable US military.
