We progressed onward by a process of alternate stops and starts, through a land bearing remarkably few traces to show for its recent chastening with sword and torch, until in the middle of the blazing hot forenoon we came to Gembloux, which I think must be the place where all the flies in Belgium are spawned. Here on a siding we lay all day, grilled in the heat and pestered by swarms of the buzzing scavenger vermin, while troop trains without number passed us, hurrying along the sentry-guarded railway to the lower frontiers of Belgium. Every box-car door made a frame for a group-picture of broad German faces and bulky German bodies. Upon nearly every car the sportive passengers had lashed limbs of trees and big clumps of field flowers. Also with colored chalks they had extensively frescoed the wooden walls as high up as they could reach. The commonest legend was "On to Paris," or for variety "To Paris Direct," but occasionally a lighter touch showed itself. For example, one wag had inscribed on a car door: "Declarations of War Received Here," and another had drawn a highly impressionistic likeness of his Kaiser, and under it had inscribed "Wilhelm II, Emperor of Europe." Presently as train after train, loaded sometimes with guns or supplies but usually with men, clanked by, it began to dawn upon us that these soldiers were of a different physical type from the soldiers we had seen heretofore. They were all Germans, to be sure, but the men along the front were younger men, hard-bitten and trained down, with the face which we had begun to call the Teutonic fighting face, whereas these men were older, and of a heavier port and fuller fashion of countenance. Also some of them wore blue coats, red-trimmed, instead of the dull gray service garb of the troops in the first invading columns. Indeed some of them even wore a nondescript mixture of uniform and civilian garb. They were _Landwehr_ and _Landsturm_, troops of the third and fourth lines, going now to police the roads and garrison the captured towns, and hold the lines of communication open while the first line, who were picked troops, and the second line, who were reservists, pressed ahead into France. They showed a childlike curiosity to see the prisoners in the box cars behind us. They grinned triumphantly at the Frenchmen and the Britishers, but the sight of a Turco in his short jacket and his dirty white skirts invariably set them off in derisive cat-calling and whooping. One beefy cavalryman in his forties, who looked the Bavarian peasant all over, boarded our car to see what might be seen. He had been drinking. He came nearer being drunk outright than any German soldier I had seen to date. Because he heard us talking English he insisted on regarding us as English spies. "Hark! they betray themselves," we heard him mutter thickly to one of his wounded countrymen in the next compartment. "They are damned Englishers." "_Nein!_ _Nein!_ All Americans," we heard the other say.