Players train troops by clicking on the Arms Plant in the military district. Players can move their mouse over each unit to see what condition (prerequisite buildings, resources or technologies) need to be met before each unit can be trained. If the "Train" button is grey, it means that one or more conditions haven’t been met. Players can then choose to train the maximum number of troops trainable with resources at hand or choose exactly how many they wish to train. The troops will be available to the player once their training time ends.