No longer, however, was he really king. By his own act he had turned a free sovereignty into vassalage to a foreign power, and the nation’s anger was the English aroused. Langton, a patriotic Englishman, was in a difficult position between his duty the people to the Pope and to his country, but finally joined the patriotic side. John went to France to arrest the proposed attack on England, but he met with overwhelming defeat at Bouvines in 1214. In England, his foes took the field with an army, which they called the Army of God and the Church, though the head of the Roman Church was on John’s side. He was powerless against every class in the realm, and at length yielded. On June 15, 1215, at the demand of the outraged nation, he signed at Runnymede, near Windsor, the famous document known as Magna Charta.