There is an example of what happened when one of the premier military historians of the 20th Century's book was published by a vanity press.
I remember looking forward to John Keegan's Civil War history with great anticipation. His WWII are brilliant. His Civil War book is an example of why the LSU press, for example, has such a sterling reputation. Keegan desperately needed an editor… instead it was all about making a quick buck off of his name.
Don't take my word for it. Here is an excerpt from James McPhereson review YY Times October 9, 2009.
"The analytical value of Keegan's geostrategic framework is marred by numerous errors that will leave readers confused and misinformed. I note this with regret, for I have learned a great deal from Keegan's writings. But he is not at top form in this book. Rivers are one of the most important geostrategic features he discusses. "The Ohio and its big tributaries, the Cumberland and the Tennessee," he writes, "form a line of moats protecting the central Upper South, while the Mississippi, with which they connect, denies the Union any hope of penetration." The reality was exactly the contrary. These navigable rivers were highways for Union naval and army task forces that pierced the Confederate heartland, capturing Nashville, New Orleans, Memphis and other important cities along with large parts of Tennessee, Louisiana, Mississippi, Alabama and Arkansas."
What grade would you give a 6th grader who made that mistake?
The essential lesson is that without proper editing even a brilliant world class historian can come off as a doofus who doesn't know what he is talking about.