Pedophilia?

[Onlooker]

Drudge is reporting that in Jim Webb's book Lost Soldiers (that John McCain praised highly), he has this quote, "A naked boy ran happily toward him from a little plot of dirt. The man grabbed his young son in his arms, turned him upside down, and put the boy’s penis in his mouth."

I assume the book really says that, but I also suspect it's a scene that reveals some bizarre cultural detail as opposed to something worse. Has anyone read the book? In what context does that passage appear?