Tempus illud in lucem rursus proferendi est!
I gather this was for a contest with a set word limit, so this was a very fine reason to make the whole story about one female prisoner for a Roman-camp gang-rape. There was a very good balance between details and story flow. Ala was the word that showed me this was cavalry, and I love reading a story where the decurion is a cavalry officer in command of a turma or at least a patrol, as he should be
The ending was both satisfying and inevitable, and I was happy to be reminded of who succeeded to Hadrian and when. Gladiatorial games were at there peak then, and yes, there had been female gladiatrices since at least Nero's time.
I often joke with my wife saying I was once a centurion under Hadrian and lived in Syria with a wife from Crete. Black hair and pale olive skin; it must be there or before I took up this taste.

One thing I really like about historical settings is the fact women usually had cunt hair!