For PtD, I will be stealing most of DOM's rules, but bring in some of my own at the same time.
Unit Types:
Skirmishers - slingers, scouts, javelineers etc. - 1% of your econ
Hoplites - spearmen, pikemen etc. - 1% of your econ
Archers - self-explanatory - 1% of your econ
Light cavalry - scouts, mounted militia etc. - 5% of your econ
Heavy cavalry - nobles, shock troopers etc. - 5% of your econ
Siege engine - rams, catapults etc. - 8% of your econ, 2 turns
Siege ladder - self-explanatory - 1% of your econ, 1 turn
Bireme - 2% of your econ, 2 turns
Trireme - 4% of your econ, 2 turns
Quadrireme - 6% of your econ, 3 turns
Quinquereme - 10% of your econ, 3 turns
Training:
Militia - 1 turn - 0% econ
Regular - 2 turns - 2% econ
Elite - 4 turns - 4% econ
Force Limit: 50 Units
You are limited in your army's size by your prestige. Starting at 0 prestige, you will be limited to 50 units. Increase your prestige, and you will see your limit increased.
Prestige replaces Faith in this game. You can gain Prestige by founding colonies, completing quests, and winning wars. Alternatively, you can lose Prestige by losing wars, failing colonies, and abandoning quests. In addition to increasing your Force Limit, Prestige can help you negotiate with minor Greek states, and decrease the cost of colonising.