Serfs served on occasion as soldiers in the event of conflict and could earn freedom or even ennoblement for valour in combat. Serfs could purchase their freedom, be manumitted by generous owners, or flee to towns or to newly settled land where few questions were asked. Laws varied from country to country: in England a serf who made his way to a chartered town (i.e. a borough) and evaded recapture for a year and a day obtained his freedom and became a burgher of the town.
