Hierarchy
LEGATUS AUGUSTI; Commander of the whole army of the country. All legions.
LEGATUS LEGIONIS; Commander of one legion. Consists of 10 Pilus Prior and their units.
PILUS PRIOR; Commander of a functional group of units. Consists of 5 Centurions and their units.
CENTURION; Field commander of a squadron or small unit. Consisting of 200 men.
Legions consist of about 10,000 soldiers. The entire Romani army consists of 10 legions.
In Assets you will find a visual elaboration.