The Club War (also Cudgel War, , ) was a 1596/97 peasant uprising in the kingdom of Sweden against exploitation by nobility and military in what is today Finland. The name of the uprising derives from the fact that the peasants armed themselves with various blunt weapons, such as cudgels, flails and maces, as they were seen as the most efficient weapons against their heavily armoured enemies. The yeomen also had swords, some firearms and two cannon at their disposal. Their opponents, the troops of Clas Eriksson Fleming, were professional, heavily armed and armoured men-at-arms.