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16. April 1945; the 1st Belorussian Front commanded by the Marshal of the Soviet Union G.K. Zhukov attacked the last German defending line by Oder-Neisse which was protected by the 9th German army of Generaloberst Heinrici with 500 German tanks and 700 canons. The Red Army suffered high casualties but in the end after 4 day battle the Red Army brake through and marched at Berlin, the heart of the Reich.
