King Arthur Badon, where he is said to have single-handedly killed 960 men. Recent studies, however, question the reliability of the "Historia Brittonum". The other text that seems to support the case for Arthur's historical existence is the 10th-century "Annales Cambriae", which also link Arthur with the Battle of Badon. The "Annales" date this battle to 516–518, and also mention the Battle of Camlann, in which Arthur and Medraut (Mordred) were both killed, dated to 537–539. These details have often been used to bolster confidence in the "Historia"<nowiki>'</nowiki>s account and to confirm that Arthur really did fight at Badon. Problems have been
King Arthur into film versions of the Arthurian legend, most notably the TV series' "Arthur of the Britons" (1972–73) and "The Legend of King Arthur" (1979), and the feature films "King Arthur" (2004) and "The Last Legion" (2007). Arthur has also been used as a model for modern-day behaviour. In the 1930s, the Order of the Fellowship of the Knights of the Round Table was formed in Britain to promote Christian ideals and Arthurian notions of medieval chivalry. In the United States, hundreds of thousands of boys and girls joined Arthurian youth groups, such as the Knights of King Arthur, in which