The Battle of the Four Rivers (Russian: Сражение на четырех реках) or Battles on the Bzura, Rawka, Pilica and Nida was a key battle between German and Russian forces in the First World War in 1914, in which the Germans unsuccessfully tried to break through and take Warsaw. The battle was the first positional battle on the eastern front, and was one of the bloodiest battles in 1914.
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