[Skooz]

Railroads were notoriously difficult targets to hit in WW2. They took a disproportionate number of aircraft to knock out a railroad.

And most German railways were fully functional a day or two later, sometimes as quickly as the next morning.

Plus, in spite of what we know now, few truly believed what was happening in Auschwitz. That is why the world was so horrified upon learning the facts after liberation.

Even more, Auschwitz was in the Russian sector of war. Under no circumstances would Stalin had allowed such an action. I'm doubtful that any Allied aircraft would have had the range to hit Auschwitz, anyway.

[TenthAmendmentChampion]

I didn't know that! Why doesn't the world blame Stalin for not bombing the concentration camp train lines in their theater of war?

[tomahawk]

Here's some views on the topic:
http://www.jewishvirtuallibrary.org/jsource/Holocaust/bombau.html

[El Gato]

Even more, Auschwitz was in the Russian sector of war. Under no circumstances would Stalin had allowed such an action. I'm doubtful that any Allied aircraft would have had the range to hit Auschwitz, anyway.

Not from England, but from bases in France or especially Italy, they probably could.

However Auschwitz was not the only death camp, just the most famous. Others were in Germany itself.