A Last Full Measure: General Jackson a Stonewall is an adaptation for the stageof Jeff Shaara's God's and Generals, a novel which was made into a major motion picture by that title by Turner Pictures. With Cudos to his father Michael who died in 1988, this play uses the model set forth by Frank Galanti in his adaptation of John Stienbeck's classic literary work, The Grapes of Wrath. Adaptation by William Mark Vaughn... Mark Vaughn of Wordsmith.( Mark Vaughn is the pen name for William Mark Vaughn. Mark is William Mark's called name.He has used his full name here at the request of the publisher