The term "manipular legion" refers to a specific military formation used by the ancient Roman army. This structure was characterized by its flexibility and adaptability, allowing soldiers to engage effectively in various combat situations. The manipular legion was typically organized into smaller units called maniples, which could maneuver independently on the battlefield. Each manipular legion consisted of three lines of troops: the hastati, principes, and triarii. This arrangement enabled the Roman army to maintain a strong defense while also providing offensive capabilities. The manipular system was instrumental in the success of the Roman military during the Republican period.