What are leigons?

Answer 1

The legions were the army corps of the Roman army. A legion had 10 cohorts. Cohorts 2 to ten had 6 centuries. The first cohort was larger and had 5 double size centuries.

This makes a total of 59 centuries. It also gives a total of 5,120 infantrymen as the 54 standard cohorts had 80 men each (which gives a total of 4,230 men) and the five double cohorts had 160 men each (giving a total of 800 men). These are loose numbers, as a Roman legion was rarely at full strength.

The smallest unit was the contubernium, which was a bit like a platoon and had 8 soldiers who shared a tent.

A legion also had a turma, a cavalry squadron of 120 horsemen.