The Roman Army was composed of legions, which were large military units of up to 5, 000 soldiers. Each LEGION was divided into cohorts, which were further divided into centuries of 80 men. The term 'LEGION' comes from the Latin word legio, meaning 'LEVY' or 'CONSCRIPTION'. The Roman Army was one of the most successful and powerful military forces in history, conquering much of Europe, North Africa, and the Middle East.