US memo shows Iraq jail methods

The September 2003 document is signed by the then commander of US forces in Iraq, Gen Ricardo Sanchez. The ACLU says the measures go beyond generally accepted practice and says Gen Sanchez should be made accountable.

The memo authorised techniques including putting prisoners in stressful positions, using loud music and light control, and changing sleeping patterns.

It also authorised the presence of muzzled military working dogs to, as the memo puts it, "exploit Arab fear of dogs while maintaining security during interrogations".

The presence of dogs and other measures, all of which required approval by Gen Sanchez, were rescinded a month later because of opposition from military lawyers.

Gen Sanchez says advance permission was required every time one of these techniques was requested, adding that he never gave such permission.

The Pentagon originally refused to release the memo on national security grounds, but passed it to the ACLU on Friday after the union challenged it in court under the Freedom of Information Act.

The ACLU says at least 12 of the 29 techniques listed in the document went far beyond limits established by the army's field manual.

"Gen Sanchez authorised interrogation techniques that were in clear violation of the Geneva Conventions and the army's own standards," ACLU lawyer Amrit Singh said in the union's statement.