Battle of the Oder–Neisse

Battle context

The Battle of the Oder–Neisse constituted the breakthrough phase of the Berlin Strategic Offensive Operation, one of the final two strategic offensives launched by the Red Army on the Eastern Front. Fought over four days in April 1945, the engagement opened the Soviet drive on Berlin by cracking German defensive lines along the Oder and Neisse rivers. The operation was organized across three Soviet fronts — the 2nd Belorussian, 1st Belorussian, and 1st Ukrainian — each assigned distinct axes of advance ranging from the Stettin–Rostock corridor in the north to the Spremberg–Torgau line in the south. Against a German force of roughly 300,000, the Soviets committed approximately 2,500,000 troops, and Soviet casualties in the operation reached between 80,000 and 100,000. Success in this phase set the conditions for encirclement and assault of the German capital, making it a direct operational prerequisite for the fall of Berlin and the effective end of the war on the Eastern Front.