I was going to rename Modern Battleship as Fast Battleship and leave Battleship alone. Super-dreadnought is too close timeline-wise to Dreadnought and there isn't enough space for both of them to coexist, so that won't work (we simply can't show every single improvement in shipbuilding, and I don't really want to try). To some extent, Modern/Fast Battleship is a "what-if" as only one new battleship was built after WWII, but many were modernized, so I think giving it the adjective-added name is better.
The current Battleship is the WWII-era ship; Mechanized Warfare is one of the last techs of the Industrial Era. The last 2 columns of the Industrial Era on the Tech Tree are what corresponds to WWII as far as real-world technology goes.
The current Battleship is the WWII-era ship; Mechanized Warfare is one of the last techs of the Industrial Era. The last 2 columns of the Industrial Era on the Tech Tree are what corresponds to WWII as far as real-world technology goes.