The Roman general known for his conquests in Gaul was Julius Caesar. His military campaigns, documented in his works "Commentarii de Bello Gallico," spanned from 58 to 50 BCE and significantly expanded Roman territories in the region. Caesar's successful strategies and tactics allowed him to defeat various Gallic tribes, consolidate power, and assert Roman dominance in what is now modern-day France and Belgium. These conquests not only enhanced his political standing but also led to tensions with the Roman Senate, ultimately contributing to the civil wars that culminated in Caesar's rise as dictator and his subsequent assassination in 44 BCE.