The Roman Army in Transition From the Pre Gunpowder Era

These are volunteers who are recruited, but they often sort of re up their recruitment a bunch. They fight with the general for a while because they become attached to them in a financial and prosperity sense. By the time caesar's fighting in britain in 54 b c e, some of these units and troops have been fightin with him for quite some time. So this is an experienced veteran force. And the romans got very good when their soldiers have been serving for a while. The legionaries are all heavy infantry during the pre gunpowder era,. Their job is to engage in hand to hand combat with the other side  to usually to break the enemy's main battle line