The Battle of Königsberg was one of the last operations of the East Prussian Offensive. The siege started in late January 1945 when the Soviets initially surrounded the city. The battle ended when the German garrison surrendered to the Soviets on 9 April after a three-day assault made their position untenable. As result, Königsberg and its surrounding areas are annexed by the Soviet Union.
In early March, in an attempt to protect its last oil reserves in Hungary and to retake Budapest, Germany launched its last major offensive against Soviet troops near Lake Balaton. In two weeks, the offensive had been repulsed. The operation lasted from 6 to 16 March, while the Soviet counter attack took place between 16 March to 15 April 1945.
On 20 April, Hitler's 56th birthday, he made his last trip to the surface. In the ruined garden of the Reich Chancellery, he awarded Iron Crosses to boy soldiers of the Hitler Youth. That afternoon, Berlin was bombarded by Soviet artillery for the first time.
By 21 April, Georgy Zhukov's 1st Belorussian Front had broken through the defenses of General Gotthard Heinrici's Army Group Vistula during the Battle of the Seelow Heights and advanced to the outskirts of Berlin.
The East Prussian Offensive was a strategic offensive by the Soviet Red Army against the German Wehrmacht on the Eastern Front (World War II). It lasted from 13 January to 25 April 1945, though some German units did not surrender until 9 May. The Battle of Königsberg was a major part of the offensive, which ended in victory for the Red Army.
After months of planning, the UN Conference on International Organization opened in San Francisco, 25 April 1945, attended by 50 governments and a number of non-governmental organizations involved in drafting the UN Charter.
Göring sent a telegram from Berchtesgaden, arguing that since Hitler was isolated in Berlin, Göring should assume leadership of Germany. Göring set a deadline, after which he would consider Hitler incapacitated. Hitler responded by having Göring arrested, and in his last will and testament of 29 April, he removed Göring from all government positions.
In the early morning hours of 29 April 1945, Wilhelm Burgdorf, Goebbels, Hans Krebs, and Bormann witnessed and signed Hitler's last will and testament. Bormann was named executor of the estate. That same night, Hitler married Eva Braun in a civil ceremony.
Soviet and Polish forces stormed and captured Berlin in late April. In Italy, German forces surrendered on 29 April. On 30 April, the Reichstag was captured, signaling the military defeat of Nazi Germany, Berlin garrison surrendered on 2 May.
In accordance with Hitler's last wishes, Bormann was named as Party Minister, thus officially confirming his top position in the Party. Grand Admiral Karl Dönitz was appointed as the new Reichspräsident (President of Germany) and Goebbels became head of government and Chancellor of Germany. Goebbels and his wife Magda committed suicide later that day.
As Soviet forces continued to fight their way into the centre of Berlin, Hitler and Braun committed suicide on the afternoon of 30 April. Braun took cyanide and Hitler shot himself. Pursuant to Hitler's instructions, their bodies were carried up to the Reich Chancellery garden and burned.