Manuel Azaña made three visits to the French front during the First World War. The first of these occurred in 1916. From that experience, he brought with him a collection of 40 photographic plates showing the terrible effects caused by the bombings in some French cities. These images were taken by photographers from press agencies working for the French army.
Azaña, who was an active supporter of the Allied cause, wrote and gave several lectures on the war and its effects.