These are strongholds that boosts the morale of the army controlling it and provides a constant supply of reinforcements. These are valuable targets that must be captured whenever you can to maintain an advantage in the battle. While inside an allied fort, your units will continuously recover HP, making them great safe zones even when you’re fighting hordes of enemies. However, the same benefit applies to the enemies sitting inside the fort they control. Enemy hero and officer units will keep constantly getting healed while you’re fighting them inside a fort. If you’re having a hard time maintaining consistent damage against an enemy unit inside a fort, keep attacking it to push it out of the fort to prevent it from healing. This tactic is particularly useful when fighting tough, high-level bosses on their turf.
If you manage to capture all other forts in the Map (except the main base), allied attacks will be strengthened. Seizing some forts will also open up their gates, enabling their dragon veins, or take control of weapon installations such as ballistas and fire orbs, allowing you to progress further in the map and turn the tide of battle to your favor.
To take control of a fort, you just need to defeat its Fort Captain or the enemy hero guarding it. Since the captains and their foot soldiers wield the same weapon type, sending allies that’s strong against them will give them the advantage of overpowering the fort’s defenses and claiming it as your own.
There will be instances where enemy forces will attempt to rush the forts you’ve taken with several officer units in order to take it back. Your fort captain won’t be able to hold them off for sure so make sure to either respond to that attack and defend the fort yourself or if you’re tied up with another more important task, you can order your allies to defend the fort. The same principle can be applied in missions where you have to ensure that your main camp doesn’t fall. It will be better to set off with at least two paired units to take care of the objectives then leave at least one playable character to defend the base so you can easily switch to him / her if needed. Unless they’re powerful enough, AI-controlled characters won’t be able to defeat attackers but they should be able to hold them off long enough until you take control of them or when you’re ready to reinforce them.
Outposts are smaller portals scattered in the Map that also provides reinforcements to the faction that Controls it. They’re guarded by a small group of soldiers lead by an Outpost Captain. These stations are pretty small and can be taken over easily so make sure to take control of any outpost you run across. Since outpost captains are also considered officer units, defeating them will yield materials and boost the bond between paired units.