If you are wondering how exactly fronts work in Victoria 3, it's pretty simple. In short, instead of moving large armies across the map and watching them fight during war, fonts replace them. Because of this, fronts are how battles are decided in Victoria 3, and learning how they work is vital for survival. That said, fronts appear when two nations begin the initial stages leading up to open warfare.
During this build-up to war, both nations will usually start mobilizing their forces by calling up generals and conscripts. After mobilization, players must decide if they want to defend their frontlines or advance them into enemy territory. Both options are great, depending on the situation. If you want to slowly drain a larger nation's resources and fight a defensive war, putting a general on defending a front might be a good idea. However, advancing your front is the way to go if you want to win new territory and regions.
Once fronts are created, the conflict will slowly begin between two sides, similar to how it exists in most paradox RTS games. In short, a box with two factions will appear with numbers to indicate total troop strength. As a frontline battle occurs, the strongest and most well-equipped General/battalion will come out on top. When this happens, the general who won that is advancing the front will move it deeper into a nation's lands, starting another front battle. However, if a defending general wins, the front will remain in the control of the defending faction.
How to defend a frontline in Victoria 3
Defending frontlines in Victoria 3 is a simple process. If you want to defend one, set a general to defend frontline. After setting a general to defend a frontline, they will sit tight and drive off any enemies to push the frontline deeper into your territory. To improve their ability to defend the frontline, we recommend promoting them and increasing military buildings and conscription in the region.
How to advance a Frontline in Victoria 3
To advance a front in Victoria 3, you must select the advance front option when interacting with your character. After selecting the option, select the front you want to advance and confirm the decision. Afterward, your general will begin fighting with a defending army. If you want to win the frontline battle, we recommend improving your army. You can improve your army by promoting generals and assigning ones with unique perks for winning advancing front battles. Improving and expanding barracks and raising the number of small arms, ammunition, and artillery you produce can also help in the long run. Upgrading your units by researching new military is also necessary to win frontline battles in Victoria 3.