* Ludwig van Beethoven (1770-1827) wrote the "Eroica" Symphony, which was inspired by Napoleon Bonaparte's military campaigns.
* Hector Berlioz (1803-1869) wrote the "Requiem Mass", which was composed in response to the French Revolution and the Napoleonic Wars.
* Giuseppe Verdi (1813-1901) wrote several operas that deal with war and its consequences, including "Nabucco" and "Aida".
* Richard Wagner (1813-1883) wrote the operas "The Ring of the Nibelung" and "Parsifal", which both contain themes of war and redemption.
* Igor Stravinsky (1882-1971) wrote the "Symphony of Psalms" and the "Rite of Spring", both of which are powerful works that explore the destructive and chaotic aspects of war.
* Benjamin Britten (1913-1976) wrote the "War Requiem", a powerful musical setting of the Requiem Mass that reflects on the horrors of World War I and the futility of war in general.
These are just a few examples of the many composers who have written music related to war. Music can be a powerful tool for expressing the emotions and experiences of war and its aftermath, and composers have used their art to create some of the most moving and powerful works in music history.