The force consisted of six hundred mounted men, sixteen hundred archers, and the rest foot-men. They found that the Flemings had fallen back to Dunkirk, and had taken up a position in front of that town. The bishop, on approaching them, sent forward a herald, to ask them whether they were for Pope Urban or Clement, and that if they were for Urban he had no quarrel with them. As soon, however, as the herald approached, the Flemings fell upon him and killed him. This excited the most lively indignation among the English, for among all civilized people the person of a herald was held to be sacred.