I have no problem with his service, nor, frankly, even with his opinions. my problem is he asserts his opinions as facts.The author's service per Wiki:
Seidule served in the United States Army for more than 35 years, starting as a tank platoon leader in Germany. His commands include a cavalry unit in the 82nd Airborne Division during the Gulf War, as well as 3rd Battalion, 81st Armor Regiment. His staff positions included crisis planning for NATO in Kosovo and North Macedonia.
The author is not the only person who, after being raised in the tenets of the Lost Cause, eventually came to a different opinion after years of study. He's notable because he grew up in the south, attended Washington and Lee, served in the army for 30-plus years, and taught history at West Point. I don't think his opinion should be dismissed out of hand. Other than a few very biased reviews, the rest of the reviews seem positive.
“Profoundly moving memoir distinguished by moral courage and intellectual integrity…Everyone interested in the Civil War and its continuing importance in American culture should read this unflinchingly honest book.” ― Professor James M. McPherson, Pulitzer Prize-winning author of Battle Cry of Freedom.