Operation Dawn 3 or Operation Valfajr-3 was Iran's worst defeat out of all the Dawn operations. 180,000 Iranian troops participated in this attack but withering Iraqi firepower in support of deeply entrenched troops slaughtered the advancing Iranians.The Iraqis struck back by emerging from their trenches to counterattack into Iran and capture Mehran. Although Iranian troops were highly motivated, they were poorly trained and equipped for this battle. For Iran the operation was a disaster.