"At the Camp War Horse detention centre in Baguba, north of Baghdad, it is a surreal scene: US soldiers handing out cash to freed prisoners along with a note saying 'You have not been mistreated.'

'Have you been mistreated?' the governor asks the detainees, dressed in orange boilersuits. 'No. We have never been tortured,' chorused those behind bars as some 50 soldiers stood nearby...

One interrogator explained his methods for getting prisoners to talk.

"I try to build a relationship and get their view point, and make them comfortable... I try to be friendly and open-minded," he said.

Bring in... the comfy chair!