“Failing Leviathan: Magnum Photographers and Civil War” is on display at the National Civil War Centre. (PHOTOS.)

Since the beginning of the Magnum Photos cooperative agency, its elite photographers have been covering conflicts, including civil wars, around the world. But in the decades since its founding in 1947, the nature of warfare has changed, as has the nature of photojournalism. The exhibition “Failing Leviathan: Magnum Photographers and Civil War” which is on display at the National Civil War Centre in the U.K. until Nov. 5, shows those dual evolutions through the work of 11 photographers in 11 conflicts.