Gregory Ashton Coco, born and raised in Louisiana, lived in the Gettysburg area for nearly 35 years. In 1972, after serving in the U.S. Army, he earned a degree in American History from the University of Southwestern Louisiana. While in the military, Greg spent a tour of duty in Vietnam as a prisoner of war military interrogator and infantry platoon radio operator with the 25th Infantry and received, among other awards, the Purple Heart and Bronze Star.

During his years in Gettysburg, Greg worked as a National Park Service Ranger and a Licensed Battlefield Guide. He wrote sixteen books and a dozen scholarly articles on Gettysburg and the Civil War. His A Strange and Blighted Land. Gettysburg: The Aftermath of a Battle was voted #12 in the Top 50 Civil War Books ever written.