
Secundus Julius Regillus (84 BC-) was a Roman general who served as legatus of Legio I Gallica in Narbo Martius (Narbonne) during Julius Caesar's Gallic Wars in the 50s BC. A distant relative of Gaius Julius Caesar, Secundus Julius Regillus campaigned against the hostile Volcae in 57 BC after the Volcae suddenly declared war on the Roman Republic, defeating the main Volcae army at the Battle of Narbo Martius before capturing Tolosa (Toulouse) and invading the rest of southern Gaul.