US Army AR15-6 investigative report regarding the March 4 incident at a traffic control point in Baghdad resulting in the death of one Italian and the wounding of two others, released April 30, 2005 [concluding that the death of agent Nicola Calipari and the wounding of freed Italian hostage Giuliana Sgrena was a "tragic accident" not warranting prosecution of any US military personnel]. Excerpt:

Recommend that no disciplinary action be taken against any Soldier involved in the incident...

Based upon previous successful coordination efforts by 3ID and 2/10 MTN working with organizations from various agencies outside their chain of command, it is clear that, while the hostage recovery operation may have otherwise been a success, prior coordination might have prevented this tragedy. Iraq is still a hostile environment, i.e, a combat zone, and the more coordination that can be done to increase situational awareness of those operating within the battlespace, the better it is for all involved.

Read the full text of the unclassified report [PDF] as redacted; unredacted version available from Macchianera.net. Reported in JURIST's Paper Chase here.