I looked around, but didn't see this posted yet.

I started a new campaign as the Scipii, and managed to take Carthage without much trouble within a few years. Having occupied the city, I can build Equities and Legionary Cavalry, but no Roman Cavalry. In my last campaign, the Legionary Cav was only available after the Reforms (as it should be, right?), but now I can build this unit, and it is only a few years into the game, way before the Reforms.

Seems like a bug to me. If so, I'll repost this in the bug forum. But if it isn't, can someone explain why I can build them now?

Is this a bug, or should I be able to build them?