After the staggering Battle of Stalingrad in 1943, the German offensive in the Soviet Union turned into a continual fallback. The Battle of Kursk, which involved the largest tank battle in history, was the last major German offensive on the Eastern Front. In June 1944, British and American forces invaded France in the D-Day landings, opening a new front against Germany. Berlin finally fell in 1945, ending World War II in Europe. The war was the largest and most destructive in human history, with 60 million dead across the world. More than 40 million people in Europe had died as a result of World War II, including between 11 and 17 million people who perished during the Holocaust. The Soviet Union lost around 27 million people (mostly civilians) during the war, about half of all World War II casualties. By the end of World War II, Europe had more than 40 million refugees. Several post-war expulsions in Central and Eastern Europe displaced a total of about 20 million people, in particular, German-speakers from all over Eastern Europe.