Jennifer M. Murray is an American military historian with a research and teaching specialization in the US Civil War and the author of On A Great Battlefield: The Making, Management, and Memory of Gettysburg National Military Park, 1933-2013. She has also worked as a seasonal interpretive park ranger at Gettysburg National Military Park for nine summers and has led hundreds of Civil War battlefield tours, as well as a World War I and World War II study abroad trips.