From the First World War through to the present bloody conflict in Yugoslavia, war photographs have provided a powerful and harrowing testimony, showing us the consequences of conflict with images that endure long enough to encourage us not to forget. The pictures of some of the most celebrated photographers have been described as "stains that cannot be removed".
Traditionally, attention has focused on the motivation and reaction of those behind the lens. Now, American correspondent Charles Glass investigates the impact of 80 years of war photography on us, the viewers.
Producer Grant Mansfield