The vast majority were Poles. Seeing as your original statement was that the prisoners were German soldiers and now you say some were Poles, you have just admitted that some Poles fought for the Nazis. Oops.
That vast majority of Poles were Polish patriots fighting against Germans. They were not communist though and that was their only fault. Some of these patriots were those Poles who return from Western front where they fought along the side of British and Americans (French fought mostly in their bedrooms and backyards tending to tomatoes and grapes)
Some Polish citizens did fight for the Germans. These were Poles of German origin living in Poland. Some native Poles also co-operated with the Nazis. That is not unusual in any nation. There were Jews fighting for the Nazis, some high ranking Nazi officers. Jews were killing Jews and they were also some of the most effective kapos in concentration camps. Using your twisted and sick logic Jews were operationg concentration camps.
The figure I can find fastest is that in the 1970s the PZPR hd 3.5 million members. So z-dariusz is calling 3.5 million Poles the scourge of the Earth.
Wait. I thought we were talking about "Poland's concentration camps" in 1947. You seem to be drifting all over the place. What does 1970 have to do with 1947 I thought we were discussing? Are you going to tell the world that Poles had concentration camps in 1970?
I see how you work. When proven wrong you don't have the integrity to admit it. You have an agenda and, no historical fact counts to you if it doesn't support that agenda. You are a hate filled fool and you are burning yourself out by performing a very public, and in the end masochistic, masturbation.
Another of 1500 grams of organic matter, you undoubtedly call brain, wasted.