A Rally, or a Coalition, is when multiple players team up to attack an enemy Turf, Wonder, or a Darknest. When starting a rally, the Rally Captain can set a Rally time of either 5 min, 10 min, 1 hour or 8 hours. Guildmates must deploy their armies to join the rally within this time. Once the time is up, the Coalition Army will travel to the opponent, and then attack. At most 30 participants (including captain) can join a rally.
Players must have a Battle Hall to start a rally. The Battle Hall level will determine the max number of troops that can be deployed in a players Coalition Army. The Max Coalition Army Size can also be increased for Wonder Battles through the corresponding research, with certain Heroes, and with the Mecha Trojan familiar's elder skill.
Only the Rally Captain can dismiss the entire Coalition Army, or send back Coalition troops sent by another player. Players cannot recall troops sent to a rally.