The Mahdi Army—a Shia militia created in the summer of 2003 by Muqtada al-Sadr—began to fight Coalition forces in April 2004. 2004 saw Sunni and Shia militants fighting against each other and against the new Iraqi Interim Government installed in June 2004, and against Coalition forces, as well as the First Battle of Fallujah in April and Second Battle of Fallujah in November.  The Mahdi army would kidnap Sunni civilians as part of  a genocide that occurred against them.