Holocaust 1939-1942
Daniel McGowan
1939, Nazis experimented with poison gas
1942
In 1942, systematic mass killing in stationary gas chambers (with carbon monoxide gas generated by diesel engines) began at Belzec, Sobibor, and Treblinka, all in Poland.
1940
Nazis choose the town of Oswiecim (Auschwitz) in Poland near Krakow as the site of a new concentration camp.
1940
Paris is occupied by the Nazis.
1941
Nazis invade Russia.
1942
Jews in France, Holland, Belgium, Croatia, Slovakia, Romania ordered to wear yellow stars.