sentences:  The U.S. wanted to take advantage of the arrival of the final brigade of 30,000 additional U.S. troops to open the concerted attacks.Operation Law and Order had already begun on 14 February in an attempt to take back Baghdad which had come more than 70 percent under insurgent control.It became part of Phantom Thunder when that operation started and during the period of Phantom Thunder 311 insurgents, including 26 bombers, were killed in fighting in Baghdad.