do n't accept that they ca n't take basic evidence off of a crime scene. CNN asked Quantock to explain why, if it were so easy to collect evidence, so many detainees have been released. 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. I think a lot of times we thought the insurgency would dissipate, we were working closely with the government of Iraq, we were trying to improve the Iraqi security forces, but at the end of the day, it did n't work out very well. We had to get better at taking evidence off the crime scene. A January 9, 2005, memo imposed detailed standards of evidence soldiers needed before taking in suspected insurgents in Iraq. Quantock told CNN the rules detailed in the memo were in effect through the end of 2008. The memo spells out that evidence of criminal activity should include photos of physical evidence, the detainee at the crime scene or place of capture, as well as photos of the detainee next to the evidence. Other evidence should include statements written by first-hand witnesses to the criminal activity, the memo states. At the start of this year, the rules got even stricter. A security agreement with the government of Iraq now requires an arrest warrant signed by an Iraqi judge to detain someone. Asked about the killings at the