Paths of Glory: Impressions of War Written At and Near the Front

First published in 1915, a serious first-hand description of World War I, by a well-known humorist. According to Wikipedia: "Irvin Shrewsbury Cobb (June 23, 1876 – March 11, 1944) was an American author, humorist, and columnist who lived in New York and authored more than 60 books and 300 short stories.”