Celtic warfare
The "Gallic Wars" were a series of military campaigns waged by the Roman proconsul Julius Caesar against Gallic tribes, lasting from 58 BC to 51 BC. The Romans would also raid Britannia and Germania, but these expeditions never developed into full-scale invasions. The Gallic Wars culminated in the decisive Battle of Alesia in 52 BC, in which a complete Roman victory resulted in the expansion of the Roman Republic over the whole of Gaul. The wars paved the way for Caesar to become the sole ruler of the Roman Republic.
Roman–Etruscan Wars
The many similarities between accounts of the campaigns of 389 and 386 – in both Camillus is placed in command, defeats the Volsci and comes to the aid of Sutrium – has caused several modern authors to consider these to be doublets of each other. This was the view taken by Beloch who held that the Gallic sack had a severe and long-lasting effect on Rome's fortunes. Accordingly, Camillus' stunning victories against the Etruscans and Volsci so soon after must be inventions designed to minimize the scale of the Roman defeat. Different later writers then treated these invented victories in different ways, assigning them to different years with different incidental detail, until in Livy's writings they emerge as separate, but ultimately both unhistorical, events.