Would I be correct in assuming that once Massilia falls to a faction, its specific type-hoplites will no longer be available "out in the countryside" for recruitment as mercenaries? Or, is it a case this happens only when the town falls to "YOUR" faction? I.E., the controlling faction can't recruit them any longer as mercenaries???

I ask because as the Romani, on the march around the Tyrennian Sea to Massilia, I recruited two such units, but once the town fell to me, they no longer appear out there for recruitment....