According to a newly released US military investigation, interrogators at Guantanamo Bay utilised the same techniques against detainees as at Abu Ghraib. Detainee Mohamed Qahtani (the alleged "20th hijacker" on 9/11) was forced to wear women's underwear on his head, confronted with snarling military working dogs and had a leash attached to his chains. This was done months before the invasion of Iraq and so long before military police used them on detainees at the Abu Ghraib prison. The techniques were approved by Defense Secretary Donald Rumsfeld (the approved list had 16 harsh techniques, most of the techniques were general and allowed for interpretation by interrogators).
The report's findings provide yet more evidence that the torture at Abu Ghraib was not the invention of a small group of sick military police officers. The soldiers at Guantanamo Bay, like in Iraq, believed that these techniques were approved interrogation techniques for use on detainees.
Significantly, Major General Geoffrey Miller commanded the detention facility at Guantanamo Bay and later helped set up U.S. operations at Abu Ghraib. As well as assisting in Abu Ghraib's start up in September 2003, he later sent in "Tiger Teams" of Guantanamo Bay interrogators and analysts as advisers and trainers. Miller, unlike the rank and file troops carrying out his orders, has yet to be even reprimanded.
So there are a few bad apples. They happen to be ensconced in the highest reaches of the US government and state.