My Grandfather was one of the first to enter the death camps when they were liberated.
He was crying about it on his deathbed just before he died a few years ago, he said he couldnt escape the stench of death even after all these years. He never ever spoke about it before that.
After he died I found out that during the War, he would go around mainland Europe on a motorbike, sneaking into Nazi barracks and eves-dropping and report back to the British.
How cool is that? My Granpa was a spy