Defense
Defense or combat refers to the act of simply defending oneself or going a few steps further and attempting to violently conquer other lands to make them your own. Eventually, when you're expanding your settlement, you're going to come to enjoy all the progress and resources you've made, and sadly, so will others who want to take it from you. These are known as raids, and without a skilled army to fend them off, you will fall victim to these raids.
To train soldiers, a training ground will have to be built. The longer citizens train there, the more their offensive and defensive capabilities will go up. Those who just started training will be labeled as recruits, and will become soldiers after that if they train long enough. As citizens train, they go up in levels. If they are at level 1 or higher (which means they are considered a "soldier" at this time), they can be sent out and perform tasks outside the settlement, which has them labeled as "campaigning" on the conscripts screen. Note that only soldiers are skilled enough to be sent out.
Citizens at level 1 will remember their training for 5 years, after which they will forget their training and will have to retrain again. Citizens at level 15 will have to train every day to maintain their skills.
Divisions
Soldiers can be customized by separating them into groups, known as divisions (which are separated by race, which can be chosen by the player). The amount of training per division can also be customized, as well as the amount of battlegear units per division. As expected, the more they train, the deadlier they will be out on the field. Up to 119 divisions are available for the player to customize. The amount of soldiers in a division can between 15 and 150.
Control
By clicking the "battle" button in the top-right part of the screen, the player will be able to control divisions. This is the only instance in the game where citizens can be directly controlled by the player. Here, the player can muster all citizens in a division to gather and make a formation where the player chooses by clicking and dragging the mouse.
Depending on the position of the mouse and the direction the mouse is dragged in, the formation can be a straight line, a box, or anywhere in between. The division can be in a loose or tight formation. They can also be made to run, but this exhausts the citizens. They can also be made to aggressively charge in the direction they're already facing.
Massacre
If the player, with the help of admin points, makes the cruel decision to massacre a race in their settlement, an uprising of the targeted race will occur. To fend this off, the player must have a well-trained military to fight this.