And on October 9 the gallant Belgian army withdrew from Antwerp and made its way to the Yser under cover of French and British troops. Foch soon saw that an allied offensive would not be possible then; that the most they could hope to do was to hold back the invading forces. Until October 24 he remained at Doullens, twenty miles north of Amiens. Then he removed his headquarters to the ancient town of Cassel, about eighteen miles west and a little south of Ypres. From there he was able to reach in a few hours' time any strategic part of the north front and from this actual watch-tower (Cassel is on an isolated hill more than 500 feet high, and commands views of portions of France, Belgium, and even--on a clear day--of the chalky cliffs of England; St. Omer, Dunkirk, Ypres, and Ostend are all visible from its heights), he was to direct movements affecting the destinies of all three nations. The Belgians, whose sublime stand had thwarted Germany's murderous plan against an unready world, were a sad little army when they reached the Yser about mid October. It was not what they had endured that contributed most to break their spirit; but what they had been unable to prevent. To those heroic men who had left their beautiful country to the arch-fiends of destruction, their parents and wives and children to savages who befoul the name of beasts; who no longer had any possessions, nor munitions wherewith to make another stand on Belgian soil; to them Foch took fresh inspiration with his calm and tremendous personality; to them he sent his splendid Forty-second Division to swell their ranks so frightfully depleted in Honor's cause; to them he gave the suggestion of opening their sluices and drowning out of their last little corner of Belgium the enemy they could not otherwise dislodge. This done, the next problem of Foch was to establish relations with Sir John French whereby the most cordial and complete cooperation might be insured between the British Field Marshal and the French commander of the armies in the north. There are several graphic accounts of interviews which took place between these generals. It was on October 28 that Foch saw the success of the opened sluices and the consequent salvation to the heroic Belgians of a corner of their own earth whereon to maintain their sovereignty. On the 30th the English suffered severe reverses in spite of the aid lent them by eight battalions of French soldiers and artillery reinforcements. In consequence, they had had to cede considerable ground, their line was pierced, and the flank of General Dubois' army, adjoining theirs, was menaced. When word of this disaster reached Foch that night he at once set out from Cassel for French's headquarters at Saint Omer. It was 1 A.M. when he arrived. Marshal French was asleep. He was waked to receive his visitor. "Marshal," said Foch, "your line is cracked?" "Yes." "Have you any resources?" "I have none."