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A US Marine  in Shorsharak, in Helmand province, Afghanistan looks out through the scope of his assault rifle at the filed next to the outpost.
A US Marine  in Shorsharak, in Helmand province, Afghanistan looks out through the scope of his assault rifle at the filed next to the outpost.

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    Why are so many troops dying off the battlefield?

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Why are so many troops dying off the battlefield?

Gen. Joseph Dunford said the US military's advantage is 'eroding.' CNN's Dianne Gallagher reports.

Why are so many troops dying off the battlefield?

Gen. Joseph Dunford said the US military's advantage is 'eroding.' CNN's Dianne Gallagher reports.