City Bombardment

[IsabelBraganca]

I am trying to figure out how city bombardment works. There are two good sources that had helped me out:

1. https://forums.civfanatics.com/resources/city-combat.27737/
2. https://forums.civfanatics.com/threads/hans-lemurson-figures-out-the-combat-formula.606147/

That's what I have found out so far:

1. The district damage modifier depends on the garrison health: -1 per 20 health lost.
2. The bombardment damage is divided between wall and garrison. This division depends on the wall health.
3. The log file has the garrison damage but not the wall damage.
4. It's better for the melee attack first if it can ignore walls (siege tower or Akkad). The melee will diminish the garrison health and the siege units will deal a greater damage to the wall.

I took a look in the combat.log file but there aren't all the relevant information there. I took notes and then merged them with the data from the log file. I plotted with the data the graph below. Note: I have only dealt with medieval walls in my current game.

Bombardment Damage

• IsabelBraganca
• Nov 14, 2020

 

[Victoria]

I am trying to figure out how city bombardment works. There are two good sources that had helped me out:

1. https://forums.civfanatics.com/resources/city-combat.27737/
2. https://forums.civfanatics.com/threads/hans-lemurson-figures-out-the-combat-formula.606147/

That's what I have found out so far:

1. The district damage modifier depends on the garrison health: -1 per 20 health lost.
2. The bombardment damage is divided between wall and garrison. This division depends on the wall health.
3. The log file has the garrison damage but not the wall damage.
4. It's better for the melee attack first if it can ignore walls (siege tower or Akkad). The melee will diminish the garrison health and the siege units will deal a greater damage to the wall.

I took a look in the combat.log file but there aren't all the relevant information there. I took notes and then merged them with the data from the log file. I plotted with the data the graph below. Note: I have only dealt with medieval walls in my current game.

Bombardment Damage

• IsabelBraganca
• Nov 14, 2020

Have a look at the city combat guide linked below. All been done

 

[IsabelBraganca]

Have a look at the city combat guide linked below. All been done

I've read the guide. This passage from the guide below does not make clear that walls are all or nothing. The protection of the walls is only lifted when it is completely removed; the garrison health is used to calculate the damage. That's why the damage the city receives when the walls are destroyed spikes.

Especially in the first round, unless you have enough siege/ranged to make the garrison receive 20 or more damage or remove 100% off the walls, it will not make it easier on the melee units. If the modified strength of the melee is about the same of the modified strength of the city, it will deal about 30 damage total and a little more than 20 to the garrison. This will make the city strength be reduced by 1 and increase the damage the siege unit deals.

• When attacking a city with walls it is normally best to attack with siege units first, then ranged and finally with melee units. This is because the walls severely limit the damage the garrison can take and so reducing the walls first with units that do not take damage means the typically heavier hitting melee units can cause a larger damage against the garrison. The first attack will pretty much only damage the wall and even attacking with a scout will reduce that wall % to 99% so a melee unit at least starts damaging the garrison.