April 14
- 43 BC - Battle of Forum Gallorum: Mark Antony, besieging Julius Caesar's assassin Decimus Junius Brutus in Mutina, defeats the forces of the consul Pansa, who is killed.
- AD 69 - Vitellius, commander of the Rhine armies, defeats Emperor Otho in the Battle of Bedriacum and seizes the throne.
- 1205 - Battle of Adrianople between Bulgars and Crusaders.
- 1471 - In England, the Yorkists under Edward IV defeated the Lancastrians under Warwick at the battle of Barnet; the Earl of Warwick was killed and Edward IV resumed the throne.
April 14
- 43 BC - Battle of Forum Gallorum: Mark Antony, besieging Julius Caesar's assassin Decimus Junius Brutus in Mutina, defeats the forces of the consul Pansa, who is killed.
- AD 69 - Vitellius, commander of the Rhine armies, defeats Emperor Otho in the Battle of Bedriacum and seizes the throne.
- 1205 - Battle of Adrianople between Bulgars and Crusaders.
- 1471 - In England, the Yorkists under Edward IV defeated the Lancastrians under Warwick at the battle of Barnet; the Earl of Warwick was killed and Edward IV resumed the throne.