Mary Borden, a Chicago heiress, came to Britain before the First World War, having married a Scottish missionary.

Tim Kendall writes in his War Poets blog

When he enlisted, she was also determined to contribute to the war effort, and seems to have been in no way distracted by the birth of her third child in November 1914. By the following January, she was in Belgium serving as a Red Cross volunteer, and in July 1915 she established her own hospital under French military authority. Before long, it could boast the lowest mortality rates on the Western Front.

In 1917 she wrote her masterpiece, The Forbidden Zone, which told of the conditions in which she worked.

Tim Kendall continues

Borden writes a book which is more prose poem than memoir; eschewing chronology, it works by rhythm and repetition, and by offering stark tableaux vivants (not really short stories, despite Borden’s intentions) which act out seemingly unconnected spots of time. The Forbidden Zone is a wonder. There is no other war writing remotely like it.

Mary Borden’s Writing