
Computed · Crusader Kings III 1.20.0.3
Best siege weapons
Every Crusader Kings III siege weapon regiment ranked by siege value, with buy cost, siege tier and what unlocks it.
The siege weapons with the most siege value in Crusader Kings III 1.20.0.3 are Bombards (siege value 0.6), Fire Dragon Engines (siege value 0.6) and Mobile Towers (siege value 0.4); siege weapons deal no battle damage, so they are ranked by the siege progress each adds. Patch 1.20.0.3, from game/common/men_at_arms_types.
Siege weapons by siege value (9)

BombardsSiege Weapons · 96 gold · 0.48 gold/month raised0.6siege value- Damage 0
- Toughness 12
- 10 soldiers
- Innovation: Gunpowder

Fire Dragon EnginesSiege Weapons · 121.6 gold · 1.68 gold/month raised0.6siege value- Damage 0
- Toughness 12
- 10 soldiers
- Innovation: Gunpowder

Mobile TowersSiege Weapons · 78 gold · 0.39 gold/month raised0.4siege value- Damage 0
- Toughness 12
- 10 soldiers
- Innovation: Trebuchet
- 4
TrebuchetsSiege Weapons · 78 gold · 0.39 gold/month raised0.4siege value - 5
Cloud LaddersSiege Weapons · 66 gold · 0.33 gold/month raised0.3siege value - 6
MangonelsSiege Weapons · 66 gold · 0.33 gold/month raised0.3siege value - 7
OnagersSiege Weapons · 60 gold · 0.3 gold/month raised0.2siege value - 8
Siege CrossbowsSiege Weapons · 60 gold · 0.3 gold/month raised0.2siege value - 9
Torch-BearersSiege Weapons · 30 gold · 0.15 gold/month raised0.1siege value
Bonuses to every Siege Weapons regiment
Castle (top level: Fortress) building
- Stationed Siege Weapon Effectiveness +25%
Siege Works (top level: Cannon Foundries) building
- Siege Weapon Recruitment Cost -45%
- Siege Weapon Maintenance -45%
- Stationed Siege Weapon Effectiveness +40%
- Stationed Siege Weapon Toughness +15
Alhambra (top level: Royal Palace of Alhambra) building
- Stationed Siege Weapon Effectiveness +15%
Citadel of Aleppo (top level: Reconstructed Citadel of Aleppo) building
- Stationed Siege Weapon Effectiveness +15%
The Tower of London (top level: The Tower of London) building
- Stationed Siege Weapon Effectiveness +15%
Hotin Fortification (top level: Hotin Fortress) building
- Stationed Siege Weapon Effectiveness +15%
Aljafería (top level: Aljafería) building
- Stationed Siege Weapon Effectiveness +15%
Alcázar of Segovia (top level: Alcázar of Segovia) building
- Stationed Siege Weapon Effectiveness +15%
Falak-ol-Aflak (top level: Falak-ol-Aflak) building
- Stationed Siege Weapon Effectiveness +15%
Gongsanseong Fortress (top level: Gongsanseong Fortress) building
- Stationed Siege Weapon Effectiveness +10%
Copper Mines (top level: Copper Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Silver Mines (top level: Silver Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Gold Mines (top level: Gold Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Rammelsberg Mines (top level: Rammelsberg Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Kutná Hora Mine (top level: Kutná Hora Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Baofeng Silver Mines (top level: Baofeng Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Kremnica Mines (top level: Kremnica Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Zijinshan Mines (top level: Zijinshan Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Jiaodong Mines (top level: Jiaodong Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Falun Mines (top level: Falun Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Schwaz Mine (top level: Schwaz Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Liangzhe Mines (top level: Liangzhe Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Argentiera Mine (top level: Argentiera Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Kollur Mines (top level: Kollur Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Siderokausia Mines (top level: Siderokausia Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Gold Mines of Mali (top level: Gold Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Konasamudram Mines (top level: Konasamudram Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Mines of the Forest of Dean (top level: Forest of Dean Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Mines of Phnom Dek (top level: Phnom Dek Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Mines of Hanxing (top level: Hanxing Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Chihu Iron Mines (top level: Chihu Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Zawar Mines (top level: Zawar Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Takkeda Mines (top level: Takkeda Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Khetri Copper Mines (top level: Khetri Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Taghaza Salt Pan (top level: Taghaza Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Ijil Salt Mines (top level: Ijil Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Torda Salt Mines (top level: Torda Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Ziliujing & Gongjing Salt Wells (top level: Ziliujing & Gongjing Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Phocaea Alum Mines (top level: Phocaea Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Pansjhir Mines (top level: Pansjhir Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Trepča Mines (top level: Trepča Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Rudnik Mines (top level: Rudnik Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Cévennes Mines (top level: Cévennes Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Guiyang Mines (top level: Guiyang Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Kaibao Mines (top level: Guiyang Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Khotan Mines (top level: Khotan Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Dushan Mines (top level: Dushan Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Xiuyan Jade Mines (top level: Xiuyan Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Itoigawa Jade Mines (top level: Itoigawa Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Lantian Jade Mines (top level: Lantian Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Fengtian Jade Mines (top level: Large Fengtian Mine) building
- Stationed Siege Weapon Effectiveness +30%
Hpakant Jade Mines (top level: Hpakant Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Wadi al-Allaq Mines (top level: Wadi al-Allaq Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Verespatak Mines (top level: Verespatak Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Suvarnadvipa Mines (top level: Suvarnadvipa Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Nishapur Mines (top level: Nishapur Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Srebrenica Mine (top level: Srebrenica Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Ratnapura Mines (top level: Ratnapura Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Sar-i Sang Mines (top level: Sar-i Sang Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
The Mogok Valley Mines (top level: Mogok Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Kinka Gold Mine (top level: Kinka Gold Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Tsushima Silver Mine (top level: Tsushima Silver Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Sado Gold Mine (top level: Sado Gold Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Tada Copper Mine (top level: Tada Copper Mining Complex) building
- Stationed Siege Weapon Effectiveness +38%
Gunpowder Manufacturer (top level: Hand Cannon Facility) building
- Stationed Siege Weapon Effectiveness +45%
Workshops (top level: Powderhouses) building
- Stationed Siege Weapon Effectiveness +45%
Temple (top level: Grand Temple) building
- Stationed Siege Weapon Effectiveness +13%
All 9 as a table
| Siege Weapons | 0 | 12 | 0 | 0 | 10 | 120 | 96 | 1.30 | 0.48 | 250 | — | Innovation | |
| Siege Weapons | 0 | 12 | 0 | 0 | 10 | 120 | 66 | 1.80 | 0.33 | 364 | — | Innovation | |
| Siege Weapons | 0 | 12 | 0 | 0 | 10 | 120 | 121.60 | 1 | 1.68 | 71 | — | Innovation | |
| Siege Weapons | 0 | 12 | 0 | 0 | 10 | 120 | 66 | 1.80 | 0.33 | 364 | — | Innovation | |
| Siege Weapons | 0 | 12 | 0 | 0 | 10 | 120 | 78 | 1.50 | 0.39 | 308 | — | Innovation | |
| Siege Weapons | 0 | 12 | 0 | 0 | 10 | 120 | 60 | 2 | 0.30 | 400 | — | Innovation | |
| Siege Weapons | 0 | 12 | 0 | 0 | 10 | 120 | 60 | 2 | 0.30 | 400 | — | Innovation | |
| Siege Weapons | 20 | 12 | 0 | 0 | 10 | 320 | 30 | 10.70 | 0.15 | 2,133 | — | Special | |
| Siege Weapons | 0 | 12 | 0 | 0 | 10 | 120 | 78 | 1.50 | 0.39 | 308 | — | Innovation |
Every type of men-at-arms · Siege Weapons on the men-at-arms page