The Armies of Iraq

Four years ago the fighting in Iraq was just beginning. The armed group al-Qaeda in Iraq did not even exist and Sunni and Shia groups were working together against the US-led forces.

Three years ago, sectarian divisions escalated into a battle some believe has reached civil war proportions.

Now the fighters have turned against each other.

This year has seen Shia infighting on the streets of Iraqi cities such as Karbala and Sunni armed groups fighting to keep al-Qaeda out of their regions.

In a series of exclusive reports, Al Jazeera's Hoda Abdel Hamid reports on the new reality of Iraq's many armies.
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Part One - Iraq's Sunni armies ( Click here to watch Part One - on YouTube )

Part Two - Iraq's Shia militias

Part Three - Iraq's security forces

Part Four - the US army

Part Five - al-Qaeda