Union Major General Rufus Ingalls. Photograph from the main eastern theatre of war, winter quarters at Brandy Station, 1864. Photo: Timothy H. O'Sullivan.
A German Luftwaffe Heinkel He 111 bomber flying over Wapping and the Isle of Dogs in the East End of London at the start of the Luftwaffe's evening raids, 7 September 1940. (German Air Force photographer)
View along the River Thames in London towards smoke rising from the London docks after an air raid during the Blitz, 7 September 1940.
Great Northern grain elevator. Superior, Wisconsin, August, 1941. Medium format acetate negative by John Vachon for the Farm Security Administration. (Shorpy)
A nurse from British charity War on Want attempts to vaccinate a terrified boy against cholera during an outbreak of the disease at a refugee camp outside Kolkata during the Bangladesh Liberation War, June 1971. Photograph: John Downing.
This image won Singles 2nd prize in the 1972 World Press Photo contest.