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.
French people
Gaul was militarily conquered in 58–51 BCE by the Roman legions under the command of General Julius Caesar (except the south-east which had already been conquered about one century earlier). Over the next six centuries, the two cultures intermingled, creating a hybridized Gallo-Roman culture. In the late Roman era, in addition to colonists from elsewhere in the Empire and Gaulish natives, Gallia also became home to some in-migrating populations of Germanic and Scythian origin, such as Alans.