08/26/2014 01:39 pm ET Updated Aug 26, 2014

American Douglas McAuthur McCain Dies Fighting for ISIS in Syria

ZEIN AL-RIFAI via Getty Images

The battle in itself seemed tragically normal. Two Syrian opposition groups fought and there were heavy casualties on both sides. Then victorious rebels rifled through the pockets of the dead. One contained about $800 in cash -- and an American passport.

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