The Black Hawk is the US's most important combat helicopter, designed to move quickly into hostile environments and deliver or collect troops and armaments.

BBC: News | In Depth | Military Fact Files

While the project was a success, the military soon lost interest because the shape change was too slow for the demands of a combat helicopter.

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The prince, a veteran combat helicopter pilot, mingled with the 35-member British team and then sat on a gymnasium floor in a circle of 12 sitting volleyball team members, batting the ball around amid whoops and laughter.

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Harry qualified to fly an Apache helicopter in combat early this year, after doing some of his training over the deserts of Arizona and Nevada.

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Central Command said two were treated at the scene, and the 11 others were taken by helicopter to Army combat support hospitals in the region.

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The answer is that not one American lost his or her life in combat (though two died in a helicopter accident).

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They can look to Tammy Duckworth, who flew combat missions in Iraq and lost both her legs when her helicopter was hit by a grenade.

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Army Chief Warrant Officer 3 Michael Durant, a Black Hawk helicopter pilot, was shot down in 1993 during a combat mission in Mogadishu, Somalia.

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The basic model of the helicopter can also be adapted for medical evacuation or a purely offensive combat role.

BBC: News | In Depth | Military Fact Files