Reference
Exactly what Khitans can train, build and research, by age.
Infantry and Cavalry civilization
•Pastures replace Farms
•Melee attack upgrade effects are doubled
•Skirmishers, Spearman-, and Scout Cavalry-line train and upgrade +15% faster
•Heavy Cavalry Archer upgrade available in Castle Age and costs -50%
Team bonusInfantry +2 attack vs. Ranged Soldiers
51 units · 27 buildings · 71 technologies. Each building carries what it trains and researches; upgrades sit under what they upgrade from.