Sister: The War Diary of a Nurse is Helen Boylston's famous account of life on the front-lines as a US Army nurse stationed in France during World War I. Boylston vividly recounts the long, grueling hours in surgery, the devastating German air-raids, the determination of the soldiers and her unbounded dedication to her patients. Her war diary is an important historical document, offering rare insight into early international combat operations featuring American medical personnel.