Duties: The 1st Armored Division spent an unprecedented 15 months in Iraq, The longest deployment of a division there.

CNN: Specials

Martin Dempsey of the 1st Armored Division said coalition officials have to determine whether "an isolated pocket" of insurgents chose to break the cease-fire.

CNN: Basra?bombs kill at least 68 Iraqis

The troops, which will come from the headquarters of the 1st Armored Division at Fort Bliss, Texas, "creates an additional capability" beyond what has been there, one official said.

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