Diocletian: legions and rank structure

[Nathan Ross]

"hic ducena[ria] dignitate inter lectos meruerat viros", which translates to "he had served in 'ducenarian' position among select men"

Thanks Tilman! Do you think you could give a rough translation of the rest of the inscription, for context? And, just to be clear, there's no specific reference to centurions here?

*(do we even know that this inscription is military? It looks a bit like a piece of civilian panegyric poetry! Could refer to the old equestrian official grade of ducenarius, perhaps?)

'Select men' sounds like it could refer to officers advanced from their previous positions, e.g. from the centurionate to the protectores, perhaps.