Been playing this for a while now thanks to this thread (though never had need of military even with 3 towns at levels 16, 15 an 16 - lucky me?).
I'm nearly ready to expand my palace and am considering between marble & wine for my fourth town - I have sulphur, marble & glass, but marble seems to be 50% more expensive to buy than wine so I'm probably going to have a 2nd marble town before building a wine.
It's sort've addictive but so far I'm just been building & expanding and with the idea of fellow islanders contributing to the expansion of the saw mill etc it seems there is little or no incentive to go to war - am I missing something, or are we all very peaceful at my end of the world?