After the rise of the Roman Empire, the faith in Athena gradually merged with Minerva.
Around 43 BC, after the Roman Legions invaded and ruled Britain, the Romans built many saunas and large bathing facilities in Bath, which the Romans considered to be a miraculous site of the spring and the Goddess of Wisdom, Minerva.
(The empire's bathing culture was very advanced; arenas and public baths were an indispensable part of the early empire. Romans loved cleanliness, unlike the Middle Ages where people didn't bathe.)
Minerva's divine role in warfare was unclear, but several of her temples were directly transformed from training grounds.
This aspect inherited ancient Greek culture.
Because the Great Divine Hall of Artemis was also a training ground, specifically used to train excellent archers.
"Does she have some misconception about me and Spartans?"