Military Strongman

The Military Strongman Achievement is earned for finishing the Civilization stage with more than 8 militar cities.

Tips and Tricks
Because the final skill captures all cities without giving you the option to change the city type, if you plan to use it you need to make sure you already have 8 cities of the necessary type or some of the cities you plan to capture are of that type or else you won't be able to make this achievement.