Former army sergeant Kristofer Goldsmith told the landmark hearing of "lawless murders, looting and the abuse of countless Iraqis."  He spoke of the psychologically fragile men and women who return from Iraq to find little help or treatment offered from official circles.  Goldsmith said he had "self-medicated" for several months to treat the wounds of the war...Another soldier told AFP he had to boost his medication to treat anxiety and social agoraphobia -- two of many lingering mental wounds he carries since his deployments in Iraq -- before testifying.  A group of veterans in the packed hearing room gazed blankly as their comrades' testimonies shattered the official version that the U.S. effort in Iraq is succeeding.  Almost to a man, the testifiers denounced serious flaws in the chain of command in Iraq.