Yes they were killed in action

Robert Capa

The great grandfather of all photojournalists and a man of boundless determination, Robert Capa is well known for covering five different wars: the Spanish Civil War, the Second Sino-Japanese War, World War II, the 1948 Arab-Israeli War, and the First Indochina War. He was fond of risking his life to take photos of the bloodiest battles. On May 25, 1954, Capa was in Southeast Asia to cover the First Indochina War.

Dickey Chapelle

Dickey Chapelle was an eminent war photographer of National Geographic magazine. Fond of travelling with troops, she was once imprisoned for more than seven weeks during the Hungarian Revolution of 1956. She was killed in Vietnam on November 4, 1965, when an explosive detonated and injured her fatally. She became the first American female reporter to be killed on the battlefield. (source: Wikipedia)