SECUREen.wikipedia.org/wiki/Roman_Legion
The Roman legion (Latin: legiō, [ˈɫɛɡioː]) was the largest military unit of the Roman army, composed of 5,200 infantry and 300 equites (cavalry) in the period of the Roman Republic (509 BC–27 BC) and of 5,600 infantry and 200 auxilia in the period of …