Barracks

When you first access this page, you will see 6 type of units, how many of those units you have, their offense and defense power, and how much they cost. To the right of that, there is a place for entering the amount of each unit you want to train. After you have selected the amount of units to train, clicking on the train button will start training your units.

To improve the speed of your training, you should build "Barracks" in the build menu. Click here to read more information about those barracks.