Meanwhile the sound of the music was pleasant in his ear, and he saw that the camp, despite the lateness of the hour, was vivid with life.
General Ewell gave Harry into Captain Morton's care, and walked away to a small tent, where he was joined by several of his senior officers for a conference.

But after they had tethered their horses for the night, Captain Morton took Harry through the camp.
Harry was full of eagerness and curiosity and he asked to see first the strange "Cajuns," those who made the music.
"They are Louisiana French," said Morton, "not the descendants or the original French settlers in that state, but the descendants of the French by the way of Nova Scotia." "Oh, I see, the Acadians, the exiles." "Yes, that's it.

The name has been corrupted into Cajuns in Louisiana.
They are not like the French of New Orleans and Baton Rouge and the other towns.

They are rural and primitive.

You'll like them.