Shouldn’t it never change because it’s all in the past?

The truth is anything but.

Having been involved in everything from giving tours to leading nationally important preservation and battlefield protection organizations, few people know Civil War history like Dennis.

In his recent book, Antietam Shadows: Mystery, Myth & Machination, Dennis makes the case that history should never lie dormant, it always needs to be re-examined, stating, "Historians should always be challenging themselves. They should always be a detective. They should always be mining for new information, and if it completely reverses something that’s conventional, good, good. Throw it out there and let people see it in a different way, in a different manner, in a different light." 

Listen in to this episode of PreserveCast to hear from Dennis about his investigative and inclusive approach to historical research on this special re-broadcast in commemoration of the 157th Anniversary of the Battle of Antietam.