- 753 BC: Romulus and Remus found the city of Rome where they were suckled by a she-wolf (traditional date).
- 1526: The Mughal emperor Babur establishes an Islamic dynasty in India with victory at the Battle of Panipat.
- 1918: The 'Red Baron', Manfred von Richtofen, a German ace credited with 80 victories, is shot down and killed.