Gaul was a region of Western Europe during the Iron Age and Roman era, encompassing present day France, Luxembourg and Belgium, most of Switzerland, the western part of Northern Italy, as well as the parts of the Netherlands and Germany on the left bank of the Rhine.
During the 2nd and 1st centuries BC, Gaul fell under Roman rule: Gallia Cisalpina was conquered in 203 BC and Gallia Narbonensis in 123 BC. Gaul was invaded by the Cimbri and the Teutons after 120 BC, who were in turn defeated by the Romans by 101 BC. Julius Caesar finally subdued the remaining parts of Gaul in his campaigns of 58 to 51 BC. Roman control of Gaul lasted for five centuries, until the last Roman rump state, the Domain of Soissons, fell to the Franks in AD 486. During this time, the Celtic culture had become amalgamated into a Gallo-Roman culture and the Gaulish language was likely extinct by the 6th century.
- In Young Hercules: Cheiron's Warriors, Ares has a shield from Gaul hanging on the wall of his temple.