** Battle of Placentia — Emperor Aurelian is defeated by the Alemanni forces invading Italy

** Battle of Placentia: The Alamanni invade Italy and sack the city of Piacenza.

** On January 18, former Social Distortion bassist Brent Liles, who played on their first album Mommy's Little Monster and is featured in the tour documentary Another State of Mind, died after being hit by a semi truck while riding a dirt bike in Placentia, California.

** Battle of Placentia 271

** 271, Battle of Placentia, Battle of Fano, Battle of Pavia, Destruction of Alemannic army, Assassination of Gallic Emperor Victorinus, Emperor Aurelian repelled another Gothic invasion but abandoned the province of Dacia north of Danube forever, Construction of the Aurelian Wall begins.