I appreciate your intellectual honesty in drawing attention to the Red Cross report.

It pretty effectively debunks attempts by Bush, his lieutenants, and partisans to minimize the problem by portraying it as an isolated aberration (the "Throw Karpinski to the wolves!" strategy):

While certain circumstances might require defensive precautions and the use of force on the part of battle group units, the ICRC collected allegations of ill-treatment following capture which took place in Baghdad, Basrah, Ramadi and Tikrit*, indicating a consistent pattern with respect to times and places of brutal behavior during arrest. The repetition of such behavior by CF [Coalition Forces] appeared to go beyond the reasonable, legitimate and proportional use of force required to apprehend suspects or restrain persons resisting arrest and capture, and seemed to reflect a usual modus operandi by certain CF battle group units.

According to allegations collected by the ICRC, ill-treatment during interrogation was not systematic, except with regard to persons arrested in connection with suspected security offices or deemed to have an "intelligence" value. In these cases, persons deprived of their liberty under supervision of the military intelligence were at high risk of being subjected to a variety of harsh treatments ranging from insults, threats and humliations to both physical and psychological coercion, which in some cases was tantamount to torture, in order to force cooperation with their interrogators.

...

Since the beginning of the conflict, the ICRC has regularly brought its concerns to the attention of the CF. The observations in the present report are consistent with those made earlier on several occasions orally and in writing to the CF throughout 2003. In spite of some improvements in the material conditions of internment, allegations of ill-treatement perpetrated by members of the CF against persons deprived of their liberty continued to be collected by the ICRC and thus suggested that the use of ill-treatment against persons deprived of their liberty went beyond exceptional cases and might be considered a practice tolerated by the CF.

*Later in the report it provides a more detailed list of the sites where allegations of mistreatment were documented:

3. The main places of internment where mistreatement allegedly took place included battle group unit stations; the military intelligcence sections of Camp Cropper and Abu Ghraib Correctional Facility; Al-Baghdadi, Heat Base and Habbania Camp in Ramadi governorate; Tikrit holding area (former Saddam Hussein Islamic School); a former train station in Al-Khaim, near the Syrian border, turned into a military base; the Ministry of Defense and Presidential Palace in Baghdad, the former mukhabarat office in Bashrah, as well as several police stations in Baghdad.

(Emphasis and possible typos during transcription are mine.)