User:Hawkeye7/War/Selected anniversaries/September 30
- 1744 - France and Spain defeat the Kingdom of Sardinia at the Battle of Madonna dell'Olmo.
- 1813 - Battle of Bárbula: Simón Bolívar defeats Santiago Bobadilla.
- 1938 - The League of Nations unanimously outlaws "intentional bombings of civilian populations".
- 1954 - The U.S. Navy submarine USS Nautilus is commissioned as the world's first nuclear reactor powered vessel.