Decades: 100s BC 90s BC 80s BC 70s BC 60s BC - **50s BC** - 40s BC 30s BC 20s BC 10s BC 0s BC

Years: 63 BC 62 BC 61 BC 60 BC 59 BC **58 BC** 57 BC 56 BC 55 BC 54 BC 53 BC

- First year of Julius Caesar's Gallic Wars: June - Caesar defeats the migrating Helvetii in the Battle of the Arar.
- July - Caesar decisively defeats the Helvetii in the Battle of Bibracte.
- September - Caesar decisively defeats the forces of the Germanic chieftain Ariovistus near modern Belfort

**Deaths**