The Holocaust was a massive undertaking that lasted for years across several countries, with its own command and control infrastructure. This evidence was well documented by the heavily bureaucratic German government itself because they were proud of their efforts. It was further well documented by the Allied forces who entered Germany. Although the Nazis made attempts to destroy the evidence of the Holocaust when they could see that their defeat was coming, they left behind a large amount of documents relating to the Holocaust. Because of the rapid decline of the Nazi forces, attempts to destroy evidence in Germany were for the most part unsuccessful.

After their defeat, many tons of documents were recovered, and many thousands of bodies were found not yet completely decomposed in mass graves near many concentration camps. The physical evidence and the documentary proof included records of train shipments of Jews to the camps, orders for tons of cyanide and other poisons, and the remaining concentration camp structures. There are also extensive records of first-hand testimony from concentration camp survivors.

As a result of the records produced, historians agree that the Holocaust did, in fact, take place.

The traces of the near 6 million Jews were evident, as their belonging and personal body items were found left behind at death camps. Piles found at Nazi camps: piles of eyeglasses, piles of shoes, piles of gold teeth, piles of burned corpses, piles of unburned corpses, piles of artificial limbs, piles of human hair, piles of ransacked luggag), piles of shaving-brushes, piles of combs, piles of pots and pans, and the piles of clothes.

Evidence was found that revealed the most distorted  and grotesque side of the Nazi…human soap and human lampshades. The Ally forces found the recipe to make washing soap out of human parts. Lampshades and other ornamental things were found made of human skin and were brought before the U.S. Senate trials. Tattoos were found on some of the skin and forensic testing proved the human anatomy. 

In an audio recording of Himmler’s speech on October 4, 1943, he stated, "I refer now to the evacuation of the Jews, the extermination of the Jewish people. This is one of those things that is easily said: ‘The Jewish people are being exterminated,’ says every Party member. True, it’s part of our plans, the elimination of the Jews, extermination, and we’re doing it."