A Scout attack can use only Scout units. This type of attack can be carried out on both castled and uncastled cities. Only Scouts can fight Scouts, in this type of attack. Battles are fought with 50% intensity. After battle losses have been calculated, the remaining Scouts will be able to gather intel on the city they are scouting, according to:
(Please note that Scout attacks are the only type of attack where only scout units fight. In all other attack types, scout units will behave like a normal unit and interact with all other units)
All units except artillery can be used in a Plunder attack. This type of attack can be carried out on both castled and uncastled cities. Battles are fought with 10% intensity. An additional 10% intensity buffer is also applied to defenders on top of this - meaning that defenders will only suffer 10% of the losses that attackers do. After battle losses have been calculated, the remaining attacking troops will carry home plundered resources from the defending city.
All units can be used in an Assault attack. This type of attack can only be carried out on castled cities. Battles are fought with 50% intensity. After battle losses have been calculated, the remaining attacking troops will carry home plundered resources from the defending city, in the same way as with a Plunder attack.
All units can be used in a Siege attack. This type of attack can only be carried out on castled cities. Battles are fought with 10% intensity, once an hour until the attacking player cancels the attack, or the attacking force is killed off. During the time that the defending city is under siege, the city under siege will feed all defending units - be they native or supporter troops.
Additionally while the city is under siege, no native troop or trade units can leave the city. Supporting troops from other cities can still be sent home however, and trades can still arrive from other cities.
If a Senator unit is sent with the attacking force, the senator % claim will increase from 0% by a certain % amount per hour, until the claim reaches 100%, at which point the attacker captures the city from the defender, and the city is transferred to the attackers empire.
If a player has no research or loyalty, the maximum amount of claim per hour is 11%. With increasing amounts of research and loyalty, this claim per hour can go up to 30%. If there are defending troops in the defending city, this claim % per hour will be less than the maximum. Once a city is captured, all troops native to the defending city will desert, and all supporting troops will turn home to their native cities. The attacking force will remain as reinforcement to the city.
If two seperate Senator sieges are both sieging a city at once, then the Senator siege which reaches 100% and takes over the city first, will knock the other Senator's claim back down to 0%.
If artillery units (Scorpions, Battering Rams, Warships) are sent, either as an Assault or Siege, to a defending castle, then after battle losses have been calculated, the remaining artillery units will do structural damage to the fortifications (dealt by Battering Rams, Warships) and buildings (dealt by Scorpions, Warships). In the case of the Temple building, structural damage is done at a higher intensity to allow for their bigger costs.
Structural damage done by artillery units is the same for Assault and Siege attacks; battle intensity refers only to the troop battle.
Abandoned castles can also be sieged, however they will continue to decrease in points in the normal way, until they become Ruins. When an Abandoned castle that is under siege turns into Ruins, the siege will then cancel on the next hourly wave of the siege, and the attacking force will turn home.
When sending attacks from a city, depending on the amount of troop space in the city (i.e. numbers and levels of barracks), a minimum army size may apply. This means that a certain number of TS must be sent in the attack.
If there is a 4x or greater size difference in the attacking and defending armies relative to each other, a size differential will apply, according to:
Refined resources and reputation are awarded to both the attacker and defender, depending on how many of the opposing side's troops they killed. In the case of supporting defenders, awarded refines and reputation are weighted according to how many of the attacker's troops that supporter's troops specifically killed.
Reputation (as can be seen in reputation rankings) is awarded according to the recruitment cost (wood, stone, iron, gold) of the enemy troops killed, according to the equation:
or in the case of structural (building, fortification) damage, according to the build cost (wood, stone) of the building's levels knocked down, according to the equation:
Refined resources are awarded according to the equation:
or in the case of structural damage:
For more information about penalties that can apply to attacks, see the Penalties page.
Players can send troops from their cities to reinforce against attacks in other cities. Players can send troops to reinforce cities either in their own empire, or other players' empires. If there are more than 100 reinforcing cities that are defending a city which is under attack, the 100 cities with the highest defending TS counts will participate as defense in the attack, with the rest of the defending cities not participating. The 100 highest TS cities are recalculated for each individual attack.
When multiple command types are scheduled on a city for the same second (a common tactic of CotG players!), the order that the commands land in will be:
The order that commands of the same type land in will be random, i.e. troop types within a command (eg. a Senator siege or an artillery siege) will have no effect on where within the "siege segment" of a particular second that command lands in.
Siege reinforcements can be sent to join existing sieges, if the attacking player would like more TS on the siege. On the second that the siege reinforcement joins the siege, it will not do any damage. The next wave of the siege proper, is when the damage for both the siege and the siege reinforcement together will occur.