The former was a matter of no great importance. It took two distinct lines, the one from the Belfort region into Alsace, and the other from Nancy as a centre into Lorraine. The Alsatian venture gained some ground which was never wholly lost, and was adorned by one small victory near Mulhausen before it was checked by the German defence. The Lorraine {44} advance had also some initial success, but was finally thrown back on August 20 in a severe action in which the French were defeated. Luneville, across the French frontier, was occupied by the Germans, but they made no headway, and their subsequent attempts upon Nancy were repulsed by the army of General Castelnau. General Pau, a fiery, one-armed septuagenarian, was the French leader in the Alsatian invasion, but it was soon realised by General Joffre that he and the bulk of his men would be more useful at the vital point upon the northern frontier, to which early in September they were transferred. The main drama, however, quickly unfolded upon the Belgian frontier. Speed and secrecy were vital to the German plans. On July 31, before any declaration of war, and while the German representative at Brussels was perjuring his soul in his country's service by representing that no infringement was possible, three German army corps, the seventh, ninth, and tenth, fully mobilised and highly equipped, were moving up from their quarters so as to be ready for a treacherous pounce upon their little neighbour whom they were pledged to defend. Von Emmich was in command. On the night of Saturday, August 1, the vanguard of the German armies, using motor traffic followed by trains, burst through the neutral Duchy of Luxemburg, and on August 3 they were over the Belgian line at Verviers. The long-meditated crime had been done, and, with loud appeals to God, Germany began her fatal campaign by deliberate perjury and arrogant disdain for treaties. God accepted the appeal, and swiftly showed how the weakest State with absolute right upon its side may bring to naught all the crafty plottings of the strong. {45} For time was the essence of the situation. For this the innumerable motors, for this the light equipment and the lack of transport. It was on, on, at top speed, that there be no hindrance in the path of the great hosts that soon would be closing up behind. But time was life and death for the French also, with their slower mobilisation, their backward preparation, and their expectations from Great Britain. Time was the precious gift which little Belgium gave to the Allies. She gave them days and days, and every day worth an army corps. The Germans had crossed the Meuse, had taken Vise, and then had rushed at Liége, even as the Japanese had rushed at Port Arthur. With all their military lore, they had not learned the lesson which was taught so clearly in 1904--that a fortress is taken by skill and not by violence alone.