The Club Warrior is effective against cavalry and light infantry. It does melee damage and has a relatively good siege attack. Use the war club as a cavalry counter and a light infantry counter. The Club Warrior acts like a Pikeman to the Lakota with slightly more attack versus other units except cavalry.
It can be combined with Cetan Bowmen to form a cheap combo to take out infantry and cavalry. It can however be defeated by cavalry with a large amount of hit points and splash damage such the Cuirassier, Mahout Lancer, and the Spahi, or cavalry with a bonus against infantry like Lancer, Jat Lancer, etc.
The weapon used by the Club Warrior is a gunstock war club, an indigenous weapon used by Native Americans. Indigenous tribes of America most likely created the design of the club based upon European firearms.
The Sioux constructed their war clubs out of a variety of substances: stone, wood, bone, antlers, horn, and sometimes incorporated steel blades. The one consistent feature was an efficacy in combat. One blow from one of these deadly weapons could cripple or kill a grizzly bear, let alone a human opponent.