The Iraqi police in Amiriya held off the attack, and radioed for backup from Iraqi Army, police and members of the Thurwa al-Anbar, the tribal militias assembled by the Anbar Salvation Council. U.S. air support was called in to help fend off the attack. The Anbar Salvation Council leader escaped as Army, police and tribal fighters poured into the village and routed the al-Qaeda force, which was estimated to be several hundred fighters. Once intelligence source claims the figure of 50 al-Qaeda killed is low, and the number is likely over 100.
The New York Times claims "two groups that have had ties to insurgents, the Islamic Party Fighters and forces of the 20th Revolution brigade, counterattacked in support of the local residents." The proper name for the insurgent groups are the Islamic Army in Iraq, and the 1920s Revolution Brigades. And they also fought with Iraqi Army and police units.
The Islamic Army in Iraq, Jaish Al-Mujahideen, the 1920 Revolution Brigades and other elements of the Sunni insurgency are battling al-Qaeda in Anbar, and are fighting alongside government forces. Al-Qaeda countering by assassinating as many of the leaders of the Sunni opposition as possible. Last week's bombing of the Habbaniyah mosque, as well as the assassination attempt against Shiekh Abdul Sattar Abu Risha, the head of the Anbar Salvation Council, and yesterday's attack in Amiriya are part of a campaign to deprive the Sunni opposition of its leadership.
http://billroggio.com/archives/2007/03/the_amiriya_battle.php