When it became apparent to General French that the line of the Aisne, to which the Germans had retreated after the battle of the Marne, was too strong to be forced, he withdrew his troops, about 100,000 men, from the line, his place being filled by the French reserves. The object of the withdrawal was another flanking movement against the German right. The idea seems to have been that by withdrawing and entraining at night the movement would be entirely concealed from the Germans until the British were actually in Belgium, and that an advance along the left bank of the Scheldt would turn the flank of the whole German army in France, compelling a general retreat. The movement was discovered by German air scouts, however, and the troops that had been before Antwerp met and checked the British, who took up finally the line along the Yser Canal, through Ypres to La Bassée, opposed by three German army corps.
But one thing saved the British from another defeat and prevented a more disastrous retreat than that from Mons and Charleroi. When the Germans took Antwerp the Belgian garrison of about 50,000 men escaped and by a brilliant retreat retired to a line from Nieuport to Dixmude. They thus guarded the left flank of the British line and by a stubborn resistance prevented this flank from being turned and the British driven south toward Paris. Nothing else prevented Dunkirk, Calais, and Boulogne from falling into German hands at this time.
As it afterward turned out, the German plan, after the fall of Antwerp, was a sudden drive to Calais. The plan was conceived and the movement begun at the same time General French put into execution his attempt to outflank the German position. These forces met on the Ypres-La Bassée line, and both were halted. It was a fortuitous chance, then, that the Germans were held back from the coast, as well as deprived of an opportunity to strike at Paris from the north. For three weeks the Germans battled fiercely, with almost total disregard for the loss of life involved. Finally the attack died out, and with its death the whole line from the North Sea to the Swiss frontier settled down to trench warfare.
While the armies in the west were checking each other until the status of a "stalemate" had been reached, affairs in the eastern theatre had been moving rapidly. Persuaded by German money, a temptation the Turk has ever been powerless to resist, Turkey late in October joined hands with the Teutons and declared war on the Allies. The Japanese, who had at the outset joined hands with England, had, after a wonderful defense by the Germans, taken the German Chinese city of Kiao-Chau. But of more importance still was the activity of the opposing armies in Russia and in Galicia.
After the battle of Fannenburg, in which Russia was defeated and driven back to her own borders, the Germans invaded Suwalki Province in Northern Poland. The Russians again took the offensive, defeated the Germans in the battle of Augustovo, and, pressing westward, again entered East Prussia in the region of the Mazurian Lakes. In this territory a deadlock followed, both Russians and Germans remaining with horns locked and unable to move until early Spring.
In Galicia, however, events moved with greater rapidity, and the results were vastly more important. After the fall of Lemberg and Jaroslau the Russians pressed forward across the San to Tarnow, masking Przemysl on the way, and took up a line along the Dunajec to the Carpathians and east through Galicia along the Dniester and the Pruth to the Rumanian frontier, thus threatening not only the plains of Hungary, which lay just across the Carpathian summits, but also Bukowina, the Crownland of Austria.
Austria's plight was desperate, and German assistance was necessary. Von Hindenburg's first attack on Warsaw, the battle being called the battle of the Vistula, was the answer. The Germans advanced against the Russian centre, the Austrians against the left in Galicia. At first both were successful, but heavy Russian reinforcements succeeded in turning the German left, almost at the very gates of Warsaw. The Germans were forced to retreat, and fell back to their own borders. The Austrians were at the same time compelled to retreat, due to the uncovering of their flank, and again Russia was in supreme control of Galicia as far west as Cracow. As the Germans retreated the Russians followed, and another invasion of Germany was threatened, and it was von Hindenburg again who was to throw it back.
This he did, driving forward in three columns, two of which were intended to move against the Russian flanks. The Russian centre fell back to Lodz, but the right was still threatened. Again Russia assembled her reserves, and before von Hindenburg realized the situation a Russian army was not only on his flank but in his rear. A retreat was necessary. The Germans, assisted by corps drawn from the west, cut their way out and escaped from the Russian trap through the failure of one of the Russian armies to co-operate in the movement in time. But the German offense had failed and the effort had been terribly expensive.
Another offense was immediately planned—this time to move along the Vistula and strike at Warsaw from the southwest. This also was a failure, and the two armies finally became deadlocked along the line of the Bzura and the Rawka Rivers.
No further fighting of importance in this theatre until February, when the battle of the Mazurian Lakes was fought. It will be recalled that after the German defeat at Augustovo the Russians pursued the Germans into the lake district, where the two armies became practically deadlocked. This situation was broken by the Germans, who suddenly attacked both flanks of the Russian army and inflicted upon it a disastrous defeat, in which one army corps surrendered and the remainder escaped only after enormous losses.