The Sioux armies are mainly composed of Cavalry units. They have the strongest cavalry units of all of the Native American civilizations, but they have mediocre infantry. One of the most unique and important ability of Sioux is that they do not need to build houses; they already have 200 population cap from the very beginning of the game. Their houses are replaced by Teepees, which, instead of increasing population, increase hitpoint and attack of nearby units.
Their armies consist of mostly cavalry, as their infantry are mediocre and do not possess artillery, but the armies are quite balanced, too. Ranged infantry can be countered by Axe Riders, Dog Soldiers, and Tashunke Prowlers. Heavy infantry can be beaten with Dog Soldiers and Rifle Riders. Cavalry can be destroyed with Bow Riders and Rifle Riders, and artillery can be countered with any unit. Buildings can be destroyed by the use of the Fire Dance or any cavalry with high siege damage.
Civilization Bonus: Sioux doesn't need any houses to support their populations. They Have Teepees instead of Houses which gives a health and attack boost to nearby units. They Have very powerful Cavalry units.
WarChief Bonus: Possesses aura that increases the speed of nearby allied units
There are six cavalry unit types available to Sioux. There include:
The Sioux War Chief - The Sioux war chief is one of the fastest units. They have an aura that increases the speed of nearby allied units. With a shipment they can also boost attack of nearby allies and have stealth ability.
Axe Rider - A powerful hand cavalry. It has high attack, low hitpoints and fast speed. It has higher attack than most cavalry, but due to low HP, it must be guarded by other units. This cavalry is good against light infantry and artillery.
Bow Rider - A powerful ranged cavalry. Like all ranged cavalry units, they are good against other cavalry units, and are also useful against heavy infantry units.
Rifle Rider - A powerful ranged cavalry unit, the Sioux counterpart of the Dragoon. It has the fastest rate of fire of all ranged cavalry units and one of the fastest rates of fire in the game, with 1 shot per 1.5 seconds. They are good against heavy infantry and cavalry.
Tashunke Prowler - A hand cavalry unit which increases in hitpoints as they increase in number, but they have a build limit of 12, which can be increased with a Home City Shipment. They also have area of effect damage and stealth ability. They are good against light infantry and artillery.
Dog Soldier - The most powerful cavalry unit available to the Sioux. They have decent hitpoints, excellent speed, and high attack. As a lancer cavalry unit, it is good against infantry units, and, as a cavalry unit, it is also effective against skirmishers, archers, and artillery.
"The Sioux Nation is made up of three geographically different divisions of peoples who speak varying dialects of the Siouan language: the Lakota, Dakota, and Nakota. In the language of Sioux, the names Lakota, Dakota, and Nakota mean “friends.” The Sioux lived on the Great Plains of the western United States and survived primarily by hunting. Their favorite game was the American bison, or buffalo, which provided food, clothing, and shelter.
They were excellent horsemen, famed for their ability to fire bows and guns accurately while riding at full gallop. Experts at horse breeding, they owned horses both fast and clever. These animals were considered extremely valuable, and some warriors owned hundreds of them. They were used not only for war, but also as a medium of exchange.
One of history’s most renowned Sioux warriors was Sitting Bull, known also as Tatanka Yotanka (1831-1890). Born in the territory now known as South Dakota, he was revered as a Sioux principal chief, medicine man, and prophet. Sitting Bull led Native resistance against U.S. government attempts to take over tribal lands, which included his involvement in the Battle of the Little Bighorn. After spending several years in Canada with his followers, Sitting Bull returned to the U.S. under a government amnesty program. Sitting Bull's leading war chiefs were Crazy Horse and Gall."