A native of Schuylkill County, Pa., John D. Hoptak is a currently employed as an interpretive ranger at the Gettysburg National Military Park, having previously spent eight seasons at the Antietam National Battlefield. He holds a master's degree in history from Lehigh University and is the author of several books, including The Battle of South Mountain, Confrontation at Gettysburg, Antietam: September 17, 1862, and First in Defense of the Union. His articles have appeared in such publications as Civil War Times, America's Civil War, and Pennsylvania Heritage. A frequent lecturer at Roundtables, Historical Societies, and other venues, Hoptak has also appeared on various television documentaries, including on an upcoming American Heroes Channel series.
- Conference Events: Touring Gettysburg's Three Days in One Day