 Complete the following phrase:  On 20 April, his 56thbirthday, Hitler made his last trip from the Führers shelter to the surface. In the ruined garden of the Reich Chancellery, he awarded Iron Crosses to boy soldiers of the Hitler Youth, who were now fighting the Red Army at the front near Berlin. By 21 April, Georgy Zhukovs 1st Belorussian Front had broken through the defences of General Gotthard Heinricis Army Group Vistula during the 