The Battle of Łódź took place from 11 November to 6 December 1914, near the city of Łódź in Poland. Battles were fought between German units of the Eighth army, Ninth Army, Austrian First Army, and the Russian First, Second, and Fifth Armies, in harsh winter conditions. The Germans redeployed their Ninth Army around Thorn, so as to threaten the Russian northern flank, following German reversals after the Battle of the Vistula River. The German objective was to prevent an invasion of Germany, by encircling and destroying the Russians, as a result, Germans themselves were surrounded and actually lost 2 corps, although the invasion of Germany was prevented Battle had a strong impact on both the Western and Eastern fronts. It ended with the victory of the Russian troops, although the planned invasion of Germany was canceled

Łódź is a city in central Poland and a former industrial centre. It is the capital of Łódź Voivodeship, and is located 120 km (75 mi) south-west of Warsaw. As of 2023, Łódź has a population of 655,279, making it the country's fourth largest city.