The Battle of the Nations is an international historical medieval battles world championship, first held in 2010, and held in Europe in May every year since. It is a full contact competition, using metal weapons, and a standardised list of rules. National teams in HMB compete at the championchip in several standard nominations, including "Triathlon Duel", "Professional fights", "5 vs 5", "21 vs 21" and "all vs all". All battles are full contact, no stage reenactment battles are organised at the championship. In 2012 25 teams representing 25 countries entered the tournament. There are 27 national teams already registered for 2013 tournament [