This week, we interview author Justin Martin, who specializes in meticulously researched and engagingly delivered American history books. His most recent, A Fierce Glory: Antietam, the Desperate Battle That Saved Lincoln and Doomed Slavery, was published by Da Capo Press in September 2018. This group biography is about Antietam—a turning point in the Civil War—in which Martin emphasizes character development over troop movements and portrays key figures both on and off the battlefield on that fateful day: Abraham Lincoln, Robert E. Lee, and Clara Barton. Martin was interviewed by fellow biographer and BIO member Sonja Williams.