Late Roman Unit Sizes

[Flavivs Aetivs]

Praefectus legionis undecimae claudiae

Undecimani literally and clearly translates to "The Eleventh." Even Google translate recognizes that.

Undecimani is an indication that said unit never disgraced itself on the battlefield and did not have to face the old system of 'decimani' where the other troops in the army quite literally beat every tenth man in the unit to death that was to face this punishment.

Un means... well un. As in "Unconquered" or "Unfazed". "Undecimated" doesn't make sense IMO.

In Late Roman Unit Terminology, it translates to "The Elevens" just like Septimani translates to "The Sevens" and Quintani the "Fives."