<P> Capa's first published photograph was of Leon Trotsky making a speech in Copenhagen on "The Meaning of the Russian Revolution" in 1932 . </P> <P> From 1936 to 1939, Capa worked in Spain, photographing the Spanish Civil War, along with Gerda Taro, his companion and professional photography partner, and David Seymour . Taro died when the motor vehicle on which she was travelling (apparently standing on the footboard) collided with an out - of - control tank . She had been returning from a photographic assignment covering the Battle of Brunete . </P> <P> It was during that war that Capa took the photo now called "The Falling Soldier", purporting to show the death of a Republican soldier . The photo was published in magazines in France and then by Life magazine and Picture Post . The authenticity of the photo was later questioned, with evidence including other photos from the scene suggesting it was staged . Picture Post, a pioneering photojournalism magazine published in the United Kingdom, had once described then twenty - five year old Capa as "the greatest war photographer in the world ." </P> <P> Capa accompanied then journalist and author Ernest Hemingway to photograph the war, which Hemingway would later describe in his novel, For Whom the Bell Tolls (1940). Life magazine published an article about Hemingway and his time in Spain, along with numerous photos by Capa . </P>

What key contribution was made to photography by robert capa