As they approached the town, a force of 5000 Walloon infantry and 1200 cavalry were despatched from Brussels to the aid of its sister city. No sooner, however, did this force enter the town than it broke into a mutiny, which was only repressed with the greatest difficulty by Champagny. It was at this moment that Ned entered the city. He at once communicated with the governor, and delivered to him some messages with which he had been charged by the Prince of Orange, whom he had visited on his way. "Had you arrived three days since I could have discussed these matters with you," the governor said; "but as it is we are hourly expecting attack, and can think of nothing but preparations for defence. I shall be glad if you can assist me in that direction. Half the German garrison are traitors, the Walloons who have just entered are in no way to be relied upon, and it is the burghers themselves upon whom the defence of the town must really fall. They are now engaged in raising a rampart facing the citadel. I am at once proceeding thither to superintend the work." Ned accompanied the governor to the spot and found twelve thousand men and women labouring earnestly to erect a rampart, constructed of bales of goods, casks of earth, upturned wagons, and other bulky objects. The guns of the fortress opened upon the workers, and so impeded them that night fell before the fortifications were nearly completed. Unfortunately it was bright moonlight, and the artillerymen continued their fire with such accuracy that the work was at last abandoned, and the citizens retired to their homes. Champagny did all that was possible. Aided by some burghers and his own servants, he planted what few cannon there were at the weakest points; but his general directions were all neglected, and not even scouts were posted. In the morning a heavy mist hung over the city, and concealed the arrival of the Spanish troops from all the towns and fortresses in the neighbourhood. As soon as it was fairly daylight the defenders mustered. The Marquis of Havre claimed for the Walloons the post of honour in defence of the lines facing the citadel; and 6000 men were disposed here, while the bulk of the German garrison were stationed in the principal squares. At ten o'clock the mutineers from Alost marched into the citadel, raising the force there to 5000 veteran infantry and 600 cavalry.