Hmm... I've heard one of the devs (Fabio
) mention something about other units being implemented later on in the game (I think there was something regarding
spies as well, but ain't sure on that).
As for infiltrating, from BA - LMA it only reduces
one HP, not sure if that differs in CA, but I don't think so.
+ You don't have to create these 'spies'. Like HRC stated, you just click on the 'Infiltrate' option before attacking and pay 100 gold for the small reduction of HP from your enemy's units.
Regards,
Bloodwyn