Female in roman army

[Frank]

Is that actually something we know? or just something we are guessing about?

I doubt we know, where exactly Boudicca was at the final battle. Perhaps where a leader has to be: somewhere on this famous hill behind the lines?

Regarding Zenobia, who played a bit of a different role, it is a good guess, that she never saw a battlefield. But just a good guess.

However, I do not expect from a woman, even not a british one, if the roman stories about british female warriors are right at all, to be as crazy as Julius Caesar or Alexander and ride directly to the front. Women are usually more reasonable. And both were commanders in chief. The majority of ancient commanders led from behind the lines, if I remember correctly. Even crazy Caesar did so, as long as the shit did not hit the fan. And what do we really know about him? The main source about Caesar is he himself writing the perhaps best propaganda of all times.