نهر ديالى
Seven American battalions, accompanied by Iraqi Army units, advanced into a area in the northern Diyala River valley. Decoy operations were attempted in Baqubah and Wajihiya to the south to mislead the insurgents however advance units noticed an unusual number of women and children fleeing south in cars in the days before the operation. Insurgent fighters left the villages days before but some remained behind or returned to plant car bombs.