Iraq forces commander General David Petraeus and his immediate subordinate Lt. General ? Odierno attend a change of command ceremony for rotating Polish units in ad-Diwaniyah, a majority Shiia city in southern Iraq. The incoming Polish unit will be the last Polish force to serve in Iraq after Warsaw announced plans to withdraw its troops in the fall. The Polish have third largest national contingent serving in Iraq after the US and Great Britain.Iraq forces commander General David Petraeus and his immediate subordinate Lt. General Raymond Odierno attend a change of command ceremony for rotating Polish units in ad-Diwaniyah, a majority Shiia city in southern Iraq. The incoming Polish unit will be the last Polish force to serve in Iraq after Warsaw announced plans to withdraw its troops in the fall. The Polish have third largest national contingent serving in Iraq after the US and Great Britain.