Sex in the Roman Army

[Nathan Ross]

I presume the same applies to Eunuchs?

Eunuchs were extremely rare, and a valuable commodity - it was also illegal to 'make' them within the empire. So it's unlikely that a eunuch would find himself in that position... Besides, slaves or freedmen were banned from the army, and eunuchs would have been one or the other! Army recruits also had a medical examination upon enlistment, which could well have exposed any abnormalities on the sex or gender front...