A Barricade can only be built on a square already containing a Fortress. Even if unoccupied, barricades automatically stops movement of a ground unit entering its square (unless that unit belongs to the same civilization currently controlling the barricade's square, or if that unit has a Right of Passage agreement through that land. Barricades become a fortress if their square is pillaged.
Military units inside barricades have a few advantages.
- They get a 100% defensive bonus if attacked (i.e., twice the defensive bonus being in a Fortress).
- The Zone of Control exerted by the fortress still applies to a barricades.
If you want to remove a Barricade you have built, you will have to destroy it with your bombarding units.
|Civilization III Tile Improvements|