Centuries

'Centuries' is the name given to an organisational unit of the Imperial Army. They form part of a 'Cohort', which in turn form part of a 'Legion'.

'Centuries' (and this both the singular and plural form, to distinguish from 'Century' - a period of 100 year) are made up of 10 'Contubernia' and so have about 80-90 men, plus up to 10 ancillary staff (cooks, fletchers, farriers, blacksmiths, etc.). Hence 'Centuries' comprise about 100 men.