'A Farewell to Arms'' is Hemingway's classic set during the Italian campaign of World War I. The book, published in 1929, is a first-person account of American Frederic Henry, serving as a Lieutenant ("Tenente") in the ambulance corps of the Italian Army. It's about a love affair between the expatriate American Henry and Catherine Barkley against the backdrop of the First World War, cynical soldiers, fighting and the displacement of populations. The publication of ''A Farewell to Arms'' cemented Hemingway's stature as a modern American writer, became his first best-seller, and is described by biographer Michael Reynolds as "the premier American war novel from that debacle World War I."