Mahdi Army taking significant casualties in Baghdad, South

"With the fifth day of fighting in Baghdad, Basrah and the South completed, the Mahdi Army has suffered major losses over the past 36 hours. The Mahdi Army has not fared well over the past five days of fighting, losing an estimated two percent of its combat power, using the best case estimate for the size of the militia.

A look at the open source press reports from the US and Iraqi military and the established newspapers indicates 145 Mahdi Army fighters were killed, 81 were wounded, 98 were captured, and 30 surrendered during the past 36 hours."
The Long War Journal