Former SAS soldier Andy McNab fronts this hard-hitting series, uncovering the real truth and stories behind British and American soldiers fighting in Iraq and Afghanistan. In this episode, the amazing story of the Princess of Wales Royal Regiment who spent four months under constant barrage of mortars, machine guns and small arms in Al Amarah, south of Baghdad. The soldiers themselves tell how they lived under the strain. Plus the US marine sniper who came under siege, not only from the enemy forces but also from his fellow marines while perched on top of an oil tank in Iraq.

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Tags: ITV, Andy, McNab, Tour, Duty