The US President, George W Bush, has ordered the demotion of the former commander of the Abu Ghraib Prison in Iraq.
Brigadier General Janis Karpinski has been reduced in rank to colonel.
She is the first person to be demoted in connection with the prisoner abuse scandal.
She was found guilty of dereliction of duty and accused of concealing a past shoplifting arrest.
In a statement, the army said disciplinary action has also been taken against five officers, but did not identify them.
