Much was refined in the process of writing Michigan at Antietam: The Wolverine State's Sacrifice on America's Bloodiest Day. Many further posts could restore those to publication.
Many of them, however, were excised for a good reason and need not be revived; they do not add much. It is thought that the one that follows is worthy. The research findings the book's co-authors enjoyed were amazing, even to Mr. Egen who had in-depth knowledge of much of the Michigan at Antietam story. Here is a one-paragraph squib that alone should help place the book among those that contain fresh perspectives:
The foregoing discussion of Custer’s active role in the campaign and battle is believed to be the fullest and most accurate in all of the treatments of the famous figure. Some present a portrait of inactivity; e.g., “Custer, at McClellan’s side, had watched the battle unfold.” [Duane Schultz, Custer: Lessons in Leadership (New York: Palgrave Macmillan, 2010), p. 23] Others suggest uninvolvement in combat; e.g., McClellan assigned “Custer to the army’s van to report developments to army headquarters.” [Custer: The Controversial Life of George Armstrong Custer (New York: Simon & Schuster, 1996), p. 58] Others omit mention. [e.g. Gregory J.W. Irwin, Custer Victorious: The Civil War Battles of General George Armstrong Custer (Lincoln: University of Nebraska Press, 1990)] The most complete review portrays him as courageous on September 15 and largely a bystander thereafter. [Jay Monaghan, Custer: The Life of General George Armstrong Custer (Lincoln: University of Nebraska Press, 1971)]
The co-authors can report that in their various presentations the story of Custer's role in the Antietam Campaign is one that produces significant reactions. Custer's fame continues to fascinate; his actions associated with Antietam show him a great soldier for the Union.