Brett Felton, who was deployed with the 10th Mountain Division of the US Army in Iraq eight years ago, is helping teach Iraqi Christians how to defend themselves against the Islamic State (IS). The 28-year-old is not part of any organized effort but instead entered the country on his own, CBS News reported.

Driven by his Christian faith, Brett Felton of Troy, Mich., made his way to Iraq as a "soldier of Christ," to help defend the Iraqi Christians under threat from the Islamic State. When 60 Minutes producer Jeff Newton met him in February, Felton was engaged in training local Christians to defend their villages. (Watch Felton in action in the video player above.) Recent Stories in National Security All International Sanctions on Iran Reimplemented, Killing Nuclear Deal

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Christians have been persecuted by IS since it began its rampage across Iraq. Many have been driven from their homes or forced to convert by the terrorist group.

"They're under-funded. They don't have good weapons. They're completely outgunned by the Islamic State," Lara Logan said. "When you're with them, you have this terrible feeling that many of them would be massacred if the Islamic State really turned its attention to taking back those villages." But help has begun to arrive from a handful of Christians, like Felton, who are traveling to Iraq from abroad. On the day Newton was in Bakufa, Felton was training the men in urban warfare — how to enter and clear a room, how to check for suicide vests, and how to drag your wounded to safety.

Felton said he is completely committed to helping the Iraqi Christians.