Mr. Rotov recently had a post on writers who don't understand references by Civil War era folk to the parables of Jesus: Civil War Bookshelf. Right on! A sad commentary on biblical illiteracy at the highest levels of scholarship.
The esteemed blogger (a regular read by yours truly) then listed titles that "are not normal turns of phrases in the speech of the Civil War era", the first being Terrible Swift Sword. But isn't a phrase from the first stanza of the contemporary Battle Hymn of the Republic to be considered speech of the Civil War era? To me, this is classic Catton--words with power and depth of meaning.
Still, I like his point.