1. If no other alliances compete with your alliance after it has occupied a building, your alliance will automatically gain full control of the building when the countdown ends. On the other hand, if other alliances attack the building, the battle phase will begin. The alliance that continuously occupies the building for 30 minutes during the battle phase will gain full control of it.
If none of the alliances manage to occupy the building for 30 minutes by the end of the battle, the control goes to the last alliance that occupies the building.