Immunes
Regular trained legionaries were known as milites and were the equivalent in rank of the modern private. Included in the ranks, aside from the milites, were the immunes, specialist soldiers with secondary roles such as engineer, artilleryman, drill and weapons instructor, carpenter and medic. These men were still fully trained legionaries, however, and would fight in the ranks if called upon. They were excused from some of the more arduous tasks such as drill and fatigues and received better pay than their comrades in arms.
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