Ever since one of the recent patches it seems like most of the AI units and heroes just start with tactical regeneration. Checking the units I see that it isn't enchantments that are being cast on the units--they just come with it. It's also not limited to one faction. Is this a difficulty level modifier? I'm playing on Expert? It seems very strange.
Grunts, Slave Militia, heroes, everyone seems to have tactical regeneration???