containing army of some 200,000 first-line and 300,000 second-line troops, and the delays in Russian mobilization. Two of these proved to be broken reeds. Russian troops were almost as prompt in invading East Prussia as German troops in crossing the frontiers of France and Belgium, and by the end of the first week in August a flight to Berlin had begun. The shortest way from the Russian frontier to Berlin was by Posen, and it lay through a country peopled with Poles who were bitterly hostile to their German masters. But it was impossible to exploit these advantages at the expense of deepening the Polish salient with its already too narrow base, and the flanks in East Prussia and Galicia had first to be cleared. Under the supreme command of the Grand Duke Nicholas, who in spite of his rank was a competent professional soldier, and the more immediate direction of Rennenkampf, one of the few Russian officers to emerge with enchanced reputation from the Japanese War, the Russians proceed to concentrate on East Prussia (see Map). On the east Gumbinnen was captured after a battle on the 20th, and the important junction of Insterburg occupied by Rennenkampf, while on the south Samsonov on the 21st turned the German right, threatened Allenstein and drove the fugitives, as Rennenkampf had done, into the lines of Königsberg. East Prussia lay at Russia's feet, and something like a panic alarmed Berlin. The Teutonic cause was faring even worse in Galicia and Poland. Austria had a million troops in Galicia, but her offensive under Dankl towards Lublin only produced a strategic Russia retirement, while Ruszky and Brussilov overran the eastern borders and menaced Lemberg.