<hr>Base<hr>If you focus mainly on using tactics, the most important building in your personal base will be the Hangars. The best way to start your upgrades in this building is by upgrading the “building damage” stat. This is a great way to deal damage directly to enemy bunkers and see your way to Victory. Cards such as Artillery Barrage, Rocket Strike, Bombing Run, Bunker buster that focus on dealing damage to enemy buildings will benefit the most from&nbsp;this upgrade. If you are struggling with enemy infantry units you would want to upgrade the “Damage” stat. Damage stat will increase the damage output against infantry units for all tactics. Tactics such as Machine gun nest, Strafing Run, Barbed Wire, Landmines will become much more effective against enemy troops.&nbsp;If enemy tanks are what stand in your way to Victory the “Vehicle Damage” stat in the Hangars is the way to go. Upgrading this stat will increase the damage against vehicles and tactics such as Dive Bomb; Dragons Teeth; Anti-tank mines will become more effective. If your deck is centered around tanks, you might want to level up the stats in the Tank Plant building in your Base. As most tanks are mainly used to battle with other tanks and deal great damage to enemy buildings, starting off by upgrading “Building Damage” or “Vehicle Damage” is the best choice. However there are tanks such as the Mini Tank and the Flame Tank that will benefit more from upgrading the “Damage” stat as well as the “Building Damage” stat.&nbsp;If your deck is focused on using more infantry units, the Barracks building in your Base should be your first choice. Depending on how you use your infantry there are a few ways to start off your upgrades.&nbsp;Infantry such as the Shotgunner, Grenadier, Rifleman, Sniper ,Flamethrower will benefit most from upgrading the “Damage” stat, as they are troops that you would mainly use to deal with other infantry units.&nbsp;Troops such as the Rocket Launcher, Commando will benefit most from upgrading the “Vehicle Damage” and “Building Damage” stats as they are most effective against enemy vehicles and deal significant damage to enemy buildings. Lastly, units such as the Medic, Combat Engineer, Mechanic will be most effective when supported by the “health” stat upgrade in your Base.&nbsp;In the Headquarters you can improve the stats of your main Base and Bunkers. Perfect for a more defensive type of gameplay with which sometimes you might feel the pressure of losing a bunker. The “Health Regen” and “Health” options are the best choices, as in battle you can defend your bunkers with other sources of Damage. You would want to combine this upgrade with tactics such as the Rocket Battery, which will provide the damage needed to defend your bunkers and base.&nbsp;The Warehouse building in your personal base will let you Blacklist cards. Blacklisting cards means you will not earn them as a reward from the boxes you open. A good choice if you want to focus on upgrading a set deck of cards and ignore others. Blacklisting cards will increase your chances of getting other cards you want. Last but not least is the Garrison building. If you enjoy participating in the Alliance Wars or &nbsp;the Conflict of Nations, at some point you would want to upgrade the stats in the Garrison. This will increase the amount of War Tags you earn for your Alliance or the Conflict points you make for your Nation, making you a valuable member of both alliance and nation. These are the different paths you can take when it comes to your Personal Base.&nbsp;<hr>Alliance Base<hr>In the alliance base you have various buildings. Each one of them is specialized in a specific field. You have to combine efforts with your fellow alliance members and donate gold to a specific upgrade in order to start it. Once all the gold is collected the leader can start the upgrade. Finding a competitive alliance and communicating with the members will be key here.&nbsp;You don’t want to have the gold you donate split into different upgrades as it will take more time to gather the needed amount. You want to communicate with your alliance, choose what you would like to upgrade first and combine your efforts towards it. Once the amount has been reached choose another stats and donate towards it. Most of the buildings here have the same purpose as the ones in your Personal Base. &nbsp;The Control Tower is where you upgrade the stats of all Alliance members’ tactics. &nbsp;The Infantry Divisions is where you can upgrade the stats of all Alliance members’ Infantry troops. &nbsp;The Munition building is where you can improve the stats of all alliance members’ Tank troops.&nbsp;The Support Center is one of the buildings that are different and does not have an equivalent in your personal Base. Here you can increase the amount of cards you and your alliance members’ receive from the War box at the end of a war and from the alliance box, you can also increase the Ops you receive from Battles.&nbsp;The Resource Hub is where you increase&nbsp;the amount of resources and perk drop chances from expeditions. It is the second building that does not have an equivalent in the personal Base.&nbsp;To learn about what an alliance is, <a href="https://www.siegeworldwarii.com/faq/alliances" target="_blank" rel="noopener noreferrer">click here</a>. &nbsp;

Depending on your playstyle and what you enjoy doing the most in the game, you can level up different stats in your personal base and combine efforts with teammates to upgrade the Alliance Base.