"The Roman legion was the largest military unit of the Roman army, consisting of 5,200 infantry and 300 equites (cavalry) in the pre-Marian Reform Republic (509 BC–27 BC) and 5,600 infantry and 200 auxilia (27 BC – AD 476). It was a highly disciplined, well-trained and heavily armed body of up to six thousand men who shared either a barrack room or tent."

At the time of much of this writing, the Romans were very much "top of mind".