In this formation, the Romans became more like their Gallic adversaries than Greek hoplites. When it was time to draft additional soldiers into the military, they would look to their citizens for assistance in the defense of Rome. In the writings of Polybius it was in the natural order of a Roman citizen to fight in the military. However, the military was divided by class and wealth. The poorer citizens made up most of the light infantry ("velites") of the legion. The higher class "equites" were drafted into the cavalry because they could afford a horse. The Roman army was divided into 30 legions. Each legion was made up of about 4000 to 5000 legionaries. Each legion was made up of 10 cohorts, each cohort consisting of 480 legionaries. A cohort was made up of six groups (centuries) of 80 men. Each century was led by a centurion and was further divided into eight groups called "contubernia". While in this stretch the centurion, was stead to lead 100 legionaries. Centurions have been thought to lead from the writings of Polybius the centuries, and have been keen in the Roman military stance of tactics, leadership and knowledge of their troops. The centurion was a key part of the Roman military because he provided leadership to the troops that were divided among cohorts and legions, however it gave them the morale for each to be a decisive point in their ranks because of the centurion. Non-citizens could fight for Rome as well; however, they were paid less and were not given the best armor and weaponry. These soldiers were called auxiliaries. That there are multiple degrees of influence on this subject it is based off the individual soldier to the legion then also compared to the ways of combat being in melee or by ranged combat each being in a different respect. For individual experience it is framed as for legionaries that you will be very aggressive and fight for a time of 15 to 20 minutes and trying to stay alive while doing this and going to rest and let the for the formations re-rank and let them rest; which is an achievement that is very worthy to fight hand to hand in combat with more than likely overwhelming odds and trying to stay alive while still fighting and keeping a line in the battlefield is quite a feat. However ranged combat would be common in the legion, however it isn't truly elaborated on.