To participate in a battle, you must be present at the fort when the battle starts. You cannot join a battle that has already started, so be sure not to be late. Each battle is initiated 24 hours before it starts. During this time, you can sign up for the battle, choose your position, and travel to the fort. Players from the attacking alliance can only join the attack, while players from the alliance that owns the fort can only join the defense. Other players can choose which side to join.
As soon as a fort is attacked, a report is sent to all players affected by the battle.