How to create an army to capture territories?

An army must be created in Military Buildings, such as:

• Barracks of Velites
• Shooting Range of Slingers
• Barracks of Hastati
• Shooting Range of Archers
• Bastion
• Stable and other

Each building can be upgraded to level 4:

• at level 1, you can hire 2 warriors;
• at level 2, you can hire 3 warriors;
• at level 3, you can hire 4 warriors;
• At level 4, you can hire 5 warriors.

For each warrior, the cost of hiring (gold and food), as well as the time required for his training, is indicated. You can use crystals to instantly heal a warrior, but if a warrior died in battle, he must be rehired.

To capture the territory, you need to use the same warriors as the enemy, and you need to have at least as many of them as the enemy does.  

In order to have the necessary number of warriors, construct more Military Buildings.