What battle was on the eastern front battle of August 1914?

The Battle of Tannenberg, fought from August 26 to August 30, 1914, was a significant engagement on the Eastern Front during World War I. It involved German forces, led by Generals Paul von Hindenburg and Erich Ludendorff, decisively defeating the Russian Second Army. This battle marked a major turning point, as it halted the Russian advance into East Prussia and bolstered German morale early in the war. The victory also set the stage for further German offensives in the region.