The U.S. invasion that smashed its way into Iraq a year ago is prompting a sweeping re-examination of the American military as commanders seek to retool the armed forces to adopt lessons learned in the war and occupation. A war that some predicted would be over in a matter of weeks has resulted in an insurgency that will tie up U.S. forces for at least three years. Reviews of the fighting have called into question the military’s weapons, manpower and ability to respond to other hot spots. Military leaders point to successes in Iraq over the past year, including precision air strikes and the fast-moving land charge by Abrams tanks and Bradley Fighting Vehicles. Full Story