Well historically they were present in Telamon in 225 bc :
"They themselves marched confidently out with their whole available army, consisting of about fifty thousand foot and twenty thousand horse and chariots, and advanced on Etruria."
"The Celts had drawn up facing their rear, from which they expected Aemilius to attack, the Gaesatae from the Alps and behind them the Insubres, and facing in the opposite direction, ready to meet the attack of Gaius' legions, they placed the Taurisci and the Boii from the right bank of the Po. Their wagons and chariots they stationed at the extremity of either wing and collected their booty on one of the neighbouring hills with a protecting force round it."
as stated by Polybius.
However according to the recruitment viewer are only available to the south of England and northern France.
Shouldn't they be available in Mediolanum too?
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