The Clubman is the weakest of the infantry units. The Clubman can be upgraded to the Axeman. Other infantry units include the Short Swordsman, Broad Swordsman, Long Swordsman, and Legion.
Researching Toolworking, Metalworking, and Metallurgy increases attack strength. Leather Armor, Scale Armor, and Chain Mail increase armor. The Bronze Shield and Iron Shield increase piercing armor.