Well, 'Slaughterhouse - Five' by Kurt Vonnegut is a popular war fiction. It has a unique narrative style as it jumps around in time while dealing with the bombing of Dresden in World War II. 'Catch - 22' by Joseph Heller is another great one. It satirizes the military bureaucracy during World War II. Also, 'The Things They Carried' by Tim O'Brien is a collection of short stories about the Vietnam War. It focuses on the physical and emotional burdens of the soldiers.
One popular war fiction novel is 'All Quiet on the Western Front' by Erich Maria Remarque. It vividly depicts the horrors of World War I from the perspective of a young German soldier. Another is 'The Red Badge of Courage' by Stephen Crane, which explores the psychological journey of a young Union soldier during the American Civil War. Also, 'War and Peace' by Leo Tolstoy is a classic. It delves into the impact of the Napoleonic Wars on Russian society, with a large cast of characters and complex storylines.