A Farewell to Arms' concerns itself primarily with -

A Farewell to Arms concerns itself primarily with war.
- The novel offers masterful descriptions of the conflict’s senseless brutality and violent chaos.
- A Farewell to Arms is a novel by American writer Ernest Hemingway, set during the Italian campaign of World War I.
- First published in 1929.
Ernest Hemingway also wrote:
- The Torrents of Spring (1925)
- The Sun Also Rises (1926)
- A Farewell to Arms (1929)
- To Have and Have Not(1937)
- For Whom the Bell Tolls (1940)
- Across the River and Into the Trees (1950)
- The Old Man and the Sea (1952)
- Adventures of a Young Man (1962).

Source: Sparknotes.com and Britannica