Georgy Zhukov 1st Belorussian Front Gotthard Heinrici Army Group Vistula Battle of the Seelow Heights Berlin de
By 21 April, Georgy Zhukov's 1st Belorussian Front had broken through the defences of General Gotthard Heinrici's Army Group Vistula during the Battle of the Seelow Heights and advanced to the outskirts of Berlin.