Here are screenshots of the tech tree that is largely based on Budo and Bushido (the arts of war and chivalry) and it's so very different than standard tech trees that almost seem to be pretending that Civ 2 is a peaceful game when it's a game of conquest. It's not Civ 3 whatsoever. Plus your Defense Adviser's casualty statistics for all clans. As you can see some clans have startling losses. Then a glance at some advanced military units. Plus wonders and infrastructure improvements.