D-Day soldiers landing on Omaha Beach. A naked Vietnamese girl running from napalm. A Spanish loyalist, collapsing to the ground in death. These images of war, and some 300 others, are on view at the Corcoran Gallery of Art in Washington, D.C., in an exhibition called WAR/PHOTOGRAPHY: Images of Armed Conflict and Its Aftermath. Pictures from the mid-19th century to today, taken by commercial photographers, military photographers, amateurs and artists capture 165 years of conflict.