partitioned by Hungary and Poland, Slovakia chose to maintain its national and territorial integrity, seceding from Czecho-Slovakia in March 1939, and allying itself, as demanded by Germany, with Hitler's coalition.
The remaining Czech territory was occupied by Germany, which transformed it into the so-called Protectorate of Bohemia and Moravia. The protectorate was proclaimed part of the Third Reich, and the president and prime minister were subordinate to the Nazi Germany's Reichsprotektor ("imperial protector"). Subcarpathian Rus declared independence as the Republic of Carpatho-Ukraine on 15 March 1939 but was invaded by Hungary the same day and formally annexed the next day. Approximately 345,000 Czechoslovak citizens, including 277,000 Jews, were killed or executed while hundreds of thousands of others were sent to prisons and concentration camps or used as forced labour. Perhaps two–thirds of the Czech nation was destined either for extermination or removal. A Nazi German concentration camp existed at Terezín, north of Prague.
There was a strong Czech resistance to Nazi occupation, both at home and abroad, most notably with the assassination of Nazi German leader Reinhard Heydrich by Czechoslovakian soldiers Jozef Gabčík and Jan Kubiš in a Prague suburb on 27 May 1942. The Czechoslovak government-in-exile and its army fighting against the Germans were acknowledged by the Allies; Czech/Czechoslovak troops fought from the very beginning of the war in Poland, France, the UK, North Africa, the Middle East and the Soviet Union. The German occupation ended on 9 May 1945, with the arrival of the Soviet and American armies and the Prague uprising. An estimated 140,000 Soviet soldiers died in liberating Czechoslovakia from German rule.
In 1945–1946, almost the entire German minority in Czechoslovakia, about 3 million people, were expelled to Germany and Austria. During this time, thousands of Germans were held in prisons and detention
