The issue was now fairly joined between commons and knights; Louis de Mâle made his cause that of order and the nobility against anarchy and the proletariat, the King of France and the Duke of Burgundy joined him, and under Oliver, constable of France, 80,000 men, amongst whom no communal levies were admitted, marched on Ghent and its allies. Against this force Philip van Artevelde mustered 40,000 men who advanced to the attack with a mad confidence born of their recent victory over Louis. In a thick fog they hurled themselves in a solid body on the centre of the enemy, broke it, saw victory before them, and then, the fog lifting, found themselves flanked on both sides by the constable’s horse, and abandoned themselves to a panic that ended in the slaughter of more than half their number, including Van Artevelde himself, whose brief day of success and glory had lasted exactly eleven months. The French sacked Courtrai and went home, whereupon Ghent again took heart of hope, and, aided by Henry Spencer, Bishop of Norwich, with 3,000 men, defied Louis and laid siege to Ypres, which was relieved by the returning French, and a truce was finally signed at Calais. It was the end of the democratic communes, not only in Flanders but in Brabant, where Duke Wenceslas at the same time had defeated the communes at Louvain, and as well in France, where the growing spirit of communal [Illustration: THE QUAI AUX HERBES, GHENT] independence was wiped out by a king who had found in Flanders the proof that this cannot co-exist with a strong and centralised monarchy. Already industrial decline had set in; the country had been harried by French armies and by civil wars, many had gone overseas to England to establish there a rival industry that slowly sapped the prosperity of Flanders and Brabant. The Black Death had decimated the remaining population, and Bruges, Courtrai, Ypres, indeed nearly all the great towns but Ghent, slowly lost their population until hardly a tenth was left. Still a large degree of prosperity remained, and wealth was as much desired and as successfully attained as before, only within narrower lines and by a far smaller number of people. When Louis de Mâle died, shortly after the victory of his French allies over the communes, his son-in-law, Philip the Bold, Duke of Burgundy, became Count of Flanders, and the fifteenth century was dominated by Burgundian efforts to build up a strong central kingdom when it became evident that it could not control the destinies of France. Flanders, Brabant, and Namur were all incorporated in Burgundy, and later Holland and Hainault, so that it seemed for a time that a great central state might arise between the Empire and the kingdom of France.