Sachsenhausen concentration camp, guards displays bones and ash in crematorium, German prisoners are led out, GVs of cam

The transcript describes the constant use of facilities where charred bones were reduced to ash. It details the conviction of defendants who received an average sentence of 25 years, all of whom died in a Siberian prison by 1955. The abandoned camp stands as a testament to the suffering and horror inflicted by Hitler's fascist regime.

What was done to the charred bones according to the text?

What regime is referenced in the text?