Cities with Garrison increases Happiness by 1 and +10 Experience for newly trained units in that city. While at war with a Civilization with 3 or more technologies than the Sioux, units gains a combat bonus and Gold cost of upgrading military units reduced by 15%.
UU: Tokala (Longswordsman)
Does not require Iron. +25% Strength vs Gunpowder units. During Peacetime, when garrisoned in a city, that city yields extra Food and Culture.
UU: War Chief (Great General)
+1 Movement. War Chiefs and stacked units may Ignores Terrain Costs, and +15% Combat Strength when fighting in Hills, Plains, and Grassland tiles. Can construct a Citadel.
The Sioux: Red Cloud 1
Add the Sioux under the leadership of Chief Red Cloud to the Game