How many concentration camps were in poland?

Many of the 400,000 Polish prisoners of war captured by Germans during the 1939 invasion of Poland were also imprisoned in these camps, although many of them were sent as forced labourers to the heartland of Germany. read more

The concentration camps are not to be confused with the extermination camps which were designed and built exclusively to kill prisoners on a massive scale immediately upon arrival. The extermination camps of Operation Reinhard such as Bełżec, Sobibór and Treblinka served as "death factories" in which German SS and police murdered nearly 2,700,000 Jews either by asphyxiation with poison gas or by shooting. read more