Despised and often attacked, they courageously carried the slaves' cause for thirty years. Why have these inescapably Christian men and women been forgotten?

He was the Union's leading general and twice president of the United States. But he was no saint.

While carrying tracts to Union troops, one preacher was seized by Confederates as a spy.

The Confederate camp became "a school of Christ."

How would Lincoln answer? His political opponent, a famous frontier preacher, wanted to know.