In different periods in history it was common for armies to be followed by groups of women: wives of soldiers, cooks, nurses, prostitutes, seamstresses, etc. Did this happen at all in times of the Roman Empire? For example, when the Romans invaded Britain, would women have come close behind the legions?
As the mods say, there's always more to say about a topic, but while you wait for an answer, you may be interested in a similar question asked previously:
Did the Roman Legions have camp followers as later armies in the Middle Ages did?