"Before the memo was written, a person could just bring a detainee to our facility, " Quantock told CNN.

CNN: Army tapes reveal motive in Iraq prisoner killings

The Quantock Hills are protected as an Area of Outstanding Natural Beauty (AONB), and cared for by a partnership of organisations.

BBC: Quantock Hills: Views sought on future protection plan

"We're asking them to take basic evidence, which they've been trained to do, " said Quantock, who oversees detainee operations in Iraq.

CNN: Army general defends rules for detainees

Despite the high release rate, Quantock said he has confidence soldiers can take basic evidence from a crime scene in Iraq.

CNN: Army general defends rules for detainees

People living on or near the Quantock Hills in Somerset are being asked for their views on how best to protect the area in future.

BBC: Quantock Hills: Views sought on future protection plan

Quantock said Iraqi witnesses were preferred, but not required.

CNN: Army tapes reveal motive in Iraq prisoner killings

"It took us a while to realize, it goes back to my point of we were trying to make the fight fit the Army as opposed to have the Army fit the fight, " Quantock said.

CNN: Army general defends rules for detainees

"Due to funding cuts, resources are now very tight and so it is more important than ever to ensure that attention is concentrated on the right areas of work, " said Anthony Trollope-Bellew, chairman of the Quantock Hills AONB partnership.

BBC: Quantock Hills: Views sought on future protection plan