Saw a document on ostfront awhile ago and it showed the main railway lines going to the front in 1944. Auschwitz area was a very important railway yard area, with the camp "in the middle" of the yard. The southern part of front was covered by a railway line through Auschwitz area, the northern section through another making it two MAIN lines supplying the whole front, at least in the area of Western Poland after which they divided to smaller lines.
Unfortunately could not find anything maps etc in the net and the one good site was this:
Deutsche Reichsbahn - The German State Railway in WWII
Also the fact that important war machinery etc was built at the camp(s) means the railway lines would be going close-by.
http://www.adelaideinstitute.org/200...z-environs.png
Just wondered if anyone knows where to find a railway map of the German lines in the east 1944 and how many lines truly go through Auschwitz. I mean it would be no I target in that case even without the camp in my list if it was an important section and a possible bottle-neck for frontline supplies.