Combat is started by executing an Attack action from a nation within your empire.

Combat is used as a way to damage enemy nations. With enough damage to the enemy town center, an enemy nation can be conquered and added to your empire. When a nation falls as a result of combat, the system will destroy any remaining buildings and eliminate any resources in that nation then rebuild a level 1 town center for that nation.

Buildings have 10 HP per building level and all damage must be done in a single attack to affect a nation.

Troops do 1 damage to troops but 2 damage to buildings.

No resources are gained by attacking. If the attacking player wants to steal resources, they will have to give a Plunder order.

Here is an example combat scenario to help illustrate how combat works:

Round 1:

Attacking nation sends 1,000 troops into defending nation. The defending nation does not have any protection but has 750 troops - 6 buildings all level 2 -- and a level 3 town center.

The defenders lose all 750 troops, and the attacker loses 750 troops.

The remaining attacking troops deal damage to the nation's buildings equally with the town center counting as 3 buildings per level.

We need to count the number of buildings (and levels) the nation has to see how much damage each building will take.

6 normal buildings at level 2 equals 12 buildings.

1 town center at level 3 equals 9 buildings.

This gives us a total of 21 buildings, so the incoming damage of the remaining 250 troops will do 500 points of damage divided by 21 and applied to each building. This equals about 23 points of damage to each building.

The level 3 town center has 30 HP and with 21 damage applied in a single attack, nothing happens.

The other 6 level 2 buildings each have 20 HP with 21 points of damage applied, resulting in all 6 buildings losing a level down to level 1.

When a town center is attacked, it will kill 10% (per level) of the incoming troops that attack buildings. -- 30% or 75 troops in this case. (this is calculated after protection and defending troops)

The remaining 175 troops return back to the attacking nation.

Round 2:

Let us assume the attacking nation sends in another 1,000 troops. The defending nation does not have any protection or troops - 6 buildings all level 1 -- and a level 3 town center.

We need to count the number of buildings the nation has to see how much damage each building will take.

6 normal buildings at level 1 equal 6 buildings.

1 town center at level 3 equals 9 buildings.

This gives us a total of 15 buildings, so the incoming damage of the 1,000 troops will do 2,000 points of damage divided by 15 and applied to each building. This equals about 133 points of damage to each building.

The level 3 town center has 30 HP and with 133 damage applied in a single attack, the town center is reduced to level 2.

The other 6 level 1 buildings each have 10 HP with 133 points of damage applied, resulting in all 6 buildings being eliminated.

When a town center is attacked, it will kill 10% (per level) of the incoming troops that attack buildings. -- 30% or 300 troops in this case.

The remaining 700 troops return back to the attacking nation.

Round 3:

Let us assume the attacking nation sends in another 1,000 troops. The defending nation does not have any protection or troops - no buildings -- and a level 2 town center.

We need to count the number of buildings the nation has to see how much damage each building will take.

1 town center at level 2 equals 6 buildings.

This gives us a total of 6 buildings, so the incoming damage of the 1,000 troops will do 2,000 points of damage divided by 6 and applied to each building. This equals about 333 points of damage to the town center.

The level 2 town center has 20 HP and with 300+ damage applied in a single attack, the town center is reduced to level 1.

When a town center is attacked, it will kill 10% (per level) of the incoming troops that attack buildings. -- 20% or 200 troops in this case.

The remaining 800 troops return back to the attacking nation.

Round 4:

Let us assume the attacking nation sends in another 1,000 troops. The defending nation does not have any protection or troops - no buildings -- and a level 1 town center.

We need to count the number of buildings the nation has to see how much damage each building will take.

1 town center at level 1 equals 3 buildings.

This gives us a total of 3 buildings, so the incoming damage of the 1,000 troops will do 2,000 points of damage divided by 3 and applied to each building. This equals about 667 points of damage to the town center.

The level 1 town center has 10 HP and with 600+ damage applied in a single attack, the town center is eliminated.

When a town center is attacked, it will kill 10% (per level) of the incoming troops that attack buildings. -- 10% or 100 troops in this case.

The remaining 900 troops return back to the attacking nation and the defending nation has been conquered.

If the attacking nation attacked with 10,000 troops, the results would be similar, no single attack can consume a nation.

Sending that many troops against a weaker enemy just wastes food, money, and troops by the attacker and players should be encouraged to spy on a nation prior to an attack to ensure they are efficient with attacks.