There was already an end to the confusion of the early days when the parts of a piece of machinery arrived on different ships. Tables of priority for each month were sent ahead to Washington, which might well think that the A. E. F. considered that the War Department had the magical power of pulling anything that it required out of a hat. Instead of sending his requisitions for material through Chaumont, Harbord now sent them direct to the War Department; he was the great administrative agent for the chief of G-4 at Chaumont, who coördinated combat and supply, holding the balance between the demands of the front and the wherewithal to meet them. There was increasing coördination at home, too, under the indomitable authority of General March. The wedges which our divisions were driving down the walls of the Aire and the Meuse rivers and against the Kriemhilde Stellung were only a part of the giant wedge of the supply system, with its bases as broad as the United States, which narrowed to the breadth of the Atlantic Coast of France from Brest to Bordeaux. Most of our troops arrived at Brest, where the harbor was deep enough for the draught of the mighty German liners which had been transformed into transports. Navy blue and army khaki swarmed on the docks where our sea and land forces met. Our destroyers sped out of the harbor to disappear on the horizon, and reappear as the protective scurrying guards of the transports which they brought safe into port before they slipped out to sea again, to see more freighters safe through the submarine zone under their agile husbanding.