The alliance fortress is the center of the alliance base; building outposts can expand the base area.

-R4, R5, Warlord, and Marshal can place and build the alliance fortress.

-Alliance members can work together to build an alliance fortress, and the construction speed is proportional to the quantity and level of soldiers.

-The alliance fortress can be attacked. You can send your troops to defend. Once the fortress is defeated, it will be destroyed if the defense points reduce to 0.

-The injured troops from the alliance fortress attack will be sent directly to the hospital.