What he did then: Commander of Joint Task Force Guantanamo from November 2002 to April 2004

Where is he now: Appointed as Deputy Commanding General for Detention Operations in Iraq in April 2004

Reported involvement: While at Guantanamo, Miller supervised the development of a system of interrogation that rewarded detainees for providing information and punished them for failing to do so. He was lauded by Pentagon officials for dramatically increasing the intelligence output at Guantanamo, although critics charge that the use of increasingly coercive interrogation measures produced more noise than good intelligence. The Taguba report says Miller was brought to Abu Ghraib in September 2003 to "Gitmo-ize" the facility, meaning that Pentagon officials wanted him to bring with him his harsh and successful methods. Miller wrote about Abu Ghraib that "it is essential that the guard force be actively engaged in setting the conditions for successful exploitation of internees." An investigation into Miller's methods at Guantanamo was launched by the U.S. Southern Command in response to FBI e-mails that were obtained by the ACLU via the Freedom of Information Act. That investigation by Air Force Lt. Gen. Randall Schmidt is still pending.

Photograph of Geoffrey D. Miller by Khampha Bouaphanh/AFP.