N'DJAMENA, Chad – In one of the most perilous regions of the world, an American missionary is quietly building an army – not with weapons, but with prayer. Carole Ward has made it her life's mission to follow God's call and train fearless believers in Africa's Sahel region.

The Sahel region of Africa isn't the kind of place you just wander into. You're called here.

"It's very dry. It's very sandy. It's dusty. It's desert. It can be 100, 115 degrees year-round," Ward tells CBN News.

This vast stretch of land cuts across ten African nations, from Senegal to Eritrea. It's a land of extremes – scorching heat, shifting sand, and deadly danger.

More than half of the world's terror-related deaths happen here. It's the front line in a spiritual and physical battle.

"And now, here you are in t

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