Was trying to get groups of archers. So I researched warefare up to get to advanced archery and I made it (w00t). BUT when I go back to research warfare again, logistics isn't there (which makes it possible to make groups of 3 and more).
I understand that everytime you research one of the 5 main research groups it gets harder, but I didn't know you loose a chance to get technology.
Is this intended? If you go past a few research levels do you miss your chance?
