U.S. commanders have tried to put Iraqi forces in the forefront of the fight in Baghdad's Sadr City neighborhood. It's an experiment they hope gives the Iraqi army vital combat experience and a boost of confidence. But Iraqi units continue to struggle as American units coach, support and in some cases direct the fighting.
U.S. soldiers in support roles observed Iraqi forces firing weapons indiscriminately. They say communication was lacking and logistics were poor.
Fighting in the Shiite slum over the past two weeks has left hundreds of Iraqis dead.