It is widely known that any unit can defend a capital against barbarians and win if the capital is the civ's only city. I do not, however, remember coming across the fact that a capital gives a 2 times defence bonus against barbarians under normal circumstances. Yet this seems to be the case, as I found by this test:
Test Parameters
Large Map
Deity
7 Civs
Raging Hordes
Simplified Combat
Other Rules Standard
Romans
Start Techs: Bronze Working
Vet Warriors, Not fortified, in Capital
Vet Barb Archers attack.
20 Archers attack a city defended with 20 warriors (city size 25). Vets and simplified combat ensure that all 20 combats are uniform.
“Standard” expectations:
Barb attack: 3(1.5)(1.5)=6.75 Barb Deity bonus and Vet bonus
Warrior Defence: 1(1.5)(1.5)=2.25 City defence bonus and Vet bonus
Barbs win 75% of the time.
Actual Combat Results: Only Capital
Test Warrior Archer
Round Wins Wins
1 20 0
2 20 0
3 20 0
4 20 0
5 20 0
Total 100 0
Combat Results: Capital plus one city.
1 8 12
2 9 11
3 5 15
4 8 12
5 11 9
Total 41 59
Capital plus 2 cities
1 7 13
2 8 12
3 7 13
4 11 9
5 8 12
Total 41 59
Capital plus 3 cities
1 10 10
2 8 12
3 7 13
4 6 14
5 9 11
Total 40 60
Non Capital city plus capital
1 6 14
2 6 14
3 5 15
4 5 15
5 6 14
Total 28 72
Conclusion:
A capital does seem to give a bonus against barbarians, while non capital falls in closely with expectations. In order for the barbs to win 60% of the time, the approximate result, the warrior must defend at 4.5 or the Barb must attack at 5.4. Thus, the warrior must either have a 2x defence bonus or the archer must have a .8x penalty. An increased warrior defence of 2x seems much more plausible and within normal bonus multipliers, as opposed to a 20%penalty to an attacker.
The attatched files are the base for the tests I did. BARBTEST tested the barbs attacking the capital while BTEST2 tested barbs attacking a regular city. To test for additional cities with the capital, create extra settlers and build cities with them in the BARBTEST file.
Test Parameters
Large Map
Deity
7 Civs
Raging Hordes
Simplified Combat
Other Rules Standard
Romans
Start Techs: Bronze Working
Vet Warriors, Not fortified, in Capital
Vet Barb Archers attack.
20 Archers attack a city defended with 20 warriors (city size 25). Vets and simplified combat ensure that all 20 combats are uniform.
“Standard” expectations:
Barb attack: 3(1.5)(1.5)=6.75 Barb Deity bonus and Vet bonus
Warrior Defence: 1(1.5)(1.5)=2.25 City defence bonus and Vet bonus
Barbs win 75% of the time.
Actual Combat Results: Only Capital
Test Warrior Archer
Round Wins Wins
1 20 0
2 20 0
3 20 0
4 20 0
5 20 0
Total 100 0
Combat Results: Capital plus one city.
1 8 12
2 9 11
3 5 15
4 8 12
5 11 9
Total 41 59
Capital plus 2 cities
1 7 13
2 8 12
3 7 13
4 11 9
5 8 12
Total 41 59
Capital plus 3 cities
1 10 10
2 8 12
3 7 13
4 6 14
5 9 11
Total 40 60
Non Capital city plus capital
1 6 14
2 6 14
3 5 15
4 5 15
5 6 14
Total 28 72
Conclusion:
A capital does seem to give a bonus against barbarians, while non capital falls in closely with expectations. In order for the barbs to win 60% of the time, the approximate result, the warrior must defend at 4.5 or the Barb must attack at 5.4. Thus, the warrior must either have a 2x defence bonus or the archer must have a .8x penalty. An increased warrior defence of 2x seems much more plausible and within normal bonus multipliers, as opposed to a 20%penalty to an attacker.
The attatched files are the base for the tests I did. BARBTEST tested the barbs attacking the capital while BTEST2 tested barbs attacking a regular city. To test for additional cities with the capital, create extra settlers and build cities with them in the BARBTEST file.
