Medieval Pagan Slavic villagers being 'converted' by the sword (Richard Hook)

A Danish victory in the #NorthernCrusades on #ThisDayInHistory in 1219 is still remembered in folk traditions on both sides. The #BattleOfLyndanisse, on the site of #Tallinn, saw the #pagan #Estonians launch a failed assault. Thousands died on either side but the #Crusaders won.