In a new memoir set to be published May 6, the former commander of US forces in Iraq provides new intimate details of the goings-on at high levels of the Bush Administration in the first year of the Iraq war.

His sharp tongued conclusion: "Hundreds of billions of taxpayer dollars were unnecessarily spent, and worse yet, too many of our most precious military resource, our American soldiers, were unnecessarily wounded, maimed, and killed as a result. In my mind, this action by the Bush administration amounts to gross incompetence and dereliction of duty."

Sanchez commanded the US military in Iraq from 2003-2004. The three-star general was relieved of his commander in 2004 following the Abu Ghraib scandal, and in 2005, was told his career was over and he wouldn't be promoted to a fourth star.