Only the leader and the officers can build the fortress of the alliance. You can build only five fortresses for each alliance, and you have to meet all the requirements. Each fort has a strength that differs from the other; you will not use the advantages of the alliance region until you complete building the fort, and to build it, follow these steps:

- Click on the “Alliance” icon in the bottom right corner of the screen.
- Choose (Alliance Territory) then (Alliance Fort).
- Choose the stationed troops that are not yet available, meet your inquiries, and then choose (Build).
- The more units assigned, the faster the completion of the building.