All the money that is not spent in a single round is saved for subsequent rounds. you can create some imaginative (but rarely good) stratgies by saving up some cash from one or more rounds and buying a huge force.
Heh, heh, heh… very big Navy. 8)
Can you elaborate on the house rule? I’m not familiar with the historical context either. Sounds interesting…
I’m not sure either. A lot of units take longer time to build than others. Whereas ARM might take 1 turn to build, a BB might take 2. I would consider that MORE historically accurate.