By June 15 of 1943 certain Nazi leaders already began to see the possibility of defeat.  Worried that their "final solution" would be discovered, they gave SS Commander Paul Blobel the task of eliminating evidence of the atrocities committed.

Blobel had already been active in the extermination of Jews, Soviet POWs and "inferior races". In August of 1941 he was ordered to kill the entire Jewish population of the Ukraine.  This is testimony from the post-war trial:

"The Wehrmacht had already dug a grave. The children were brought along in a tractor. The Ukrainians were standing around trembling. The children were taken down from the tractor. They were lined up along the top of the grave and shot so that they fell into it. The Ukrainians did not aim at any particular part of the body. ... The wailing was indescribable."

Later Blobel organized the Babi Yar Massacre killing 33,771 Jews. From other testimony:

" ...we were driving past a long ravine. I noticed strange movements of the earth. Clumps of earth rose into the air as if by their own propulsion—and there was smoke; it was like a low-toned volcano; as if there was burning lava just beneath the earth. Blobel laughed, made a gesture with his arm pointing back along the road and ahead, all along the ravine—the ravine of Babi Yar—and said, 'Here lie my thirty-thousand Jews.'"

Blobel later will try to erase evidence of the extermination camps using the inmates themselves who will dig up the bodies.  Corpses will then be placed - sandwiched would be a better word - between alternating layers of wood to be incinerated.

Of course the extent of Nazi brutality was too great to be erased.  

Up to 59,018 killings are attributable to Blobel. He was later sentenced to death by the U.S. Nuremburg Military Tribunal.  He was hanged  shortly after midnight on June 7, 1951