The ability to bombard allows some siege, naval, and air units to reduce the defense of a city. Units can bombard more effectively with the Accuracy promotion.
The following units can bombard cities:
- Artillery (-16%/turn)
- Battleship (-20%/turn)
- Bomber (-16%/turn)
- Catapult (-8%/turn)
- Cannon (-12%/turn)
- Destroyer (-16%/turn)
- Guided Missile (-16%/turn)
- Hwacha (-8%/turn)
- Ironclad (-12%/turn)
- Jet Fighter (-12%/turn)
- Missile Cruiser (-20%/turn)
- Mobile Artillery (-16%/turn)
- Ship of the Line (-12%/turn)
- Stealth Bomber (-20%/turn)
- Trebuchet (-16%/turn)
The following buildings reduce bombard damage from pre-gunpowder units: