Political map of Russia & the former Soviet Union 08 February 1945 (From the Vistula to the Oder): In October 1944, the Soviets swung into Hungary (Budapest Offensive). By January, they were ready to thrust into the German Reich itself (Vistula–Oder Offensive), closing in on Berlin. With the British and Americans about to invade from the west (Western Allied invasion of Germany), Nazi Germany's (Nazi Germany) days were numbered.