The Spaniards, under Don Frederick, faced the north walls, while the Walloons and other regiments closed it in on the east and west. But these arrangements occupied some days; and the mists which favoured their movements were not without advantage to the besieged. Under cover of the fog supplies of provisions and ammunition were brought by men and women and even children, on their heads or in sledges down the frozen lake, and in spite of the efforts of the besiegers introduced into the city. Ned was away only two days. The prince approved of his desire to take part in the siege, and furnished him with letters to the magistrates promising reinforcements, and to Ripperda recommending Ned as a young gentleman volunteer of great courage and quickness, who had already performed valuable service for the cause. His cousins were delighted to see him back. Naturally they did not share in their mother's confidence as to the result of the siege, and felt in Ned's presence a certain sense of security and comfort. The garrison, increased by arrivals from without and by the enrollment of every man capable of bearing arms, now numbered a thousand pioneers, three thousand fighting men, and three hundred fighting women. The last were not the least efficient portion of the garrison. All were armed with sword, musket, and dagger, and were led by Kanau Hasselaer, a widow of distinguished family, who at the head of her female band took part in many of the fiercest fights of the siege, both upon and without the walls. The siege commenced badly. In the middle of December the force of some 3500 men assembled at Leyden set out under the command of De la Marck, the former admiral of the sea beggars. The troops were attacked on their march by the Spaniards, and a thousand were killed, a number taken prisoners, and the rest routed. Among the captains was a brave officer named Van Trier, for whom De la Marck offered two thousand crowns and nineteen Spanish prisoners. The offer was refused. Van Trier was hanged by one leg until he was dead, upon one of the numerous gibbets erected in sight of the town; in return for which De la Marck at once executed the nineteen Spaniards. On the 18th of December Don Frederick's batteries opened fire upon the northern side, and the fire was kept up without intermission for three days. As soon as the first shot was fired, a crier going round the town summoned all to assist in repairing the damages as fast as they were made.