Creating an ACS

In the confirmation of a normal attack, raid or siege against a village, tick «Create ACS: alliance members can join this attack». Your attack becomes the ACS leader: its type and arrival time apply to all participants. With multiple sending only the first attack becomes an ACS. Scouting and oases cannot be an ACS.

Joining an ACS

• In the Rally Point choose the troops and «ACS attack» without entering coordinates: you will see the available ACS attacks, yours and your alliance's, with travel time and slowdown.
• Your troops must be able to arrive before the leader: they are slowed down to arrive together, by at most 5:00:00.
• To join another player's ACS you must also send your hero; from your other villages you can join your own ACS without a hero.
• Settlers cannot join an ACS attack.

The battle

• All contingents fight in a single battle and have the same loss rate.
• The bonuses of the leader's village apply (Brewery, siege bonus, artifacts, morale); the Blacksmith is the one of the village each contingent starts from.
• Each hero adds its attack and its bonus; experience is split among the heroes.
• The damage of everyone's rams and catapults adds up; catapults hit the targets chosen by the leader.
• The chiefs of every contingent lower loyalty, but only the ACS leader can conquer the village, with their own requirements.
• Loot is split in proportion to each contingent's carrying capacity, attack points in proportion to its strength; everyone gets their own report.

What the defender sees

The defender only sees the leader's attack coming, like a normal attack, and does not know it is an ACS. If the ACS is a siege, they see all the contingents instead, with the exact number of troops.

If the leader's attack is cancelled or their village is conquered, the contingents return home and every participant gets a message.