Career
At the rank of Steamship-Obersturmführer, he was the second and last commandant of the Krakow-Płaszów concentration camp, succeeding Amon Goeth, from September 1944 until about January 1945. After the outbreak of the Second World War, he worked at various concentration camps: Flossenbürg, Buchenwald, Sachsenhausen and Neuengamme. Büscher succeeded Amon Goeth as the commandant of Krakow-Płaszów concentration camp after Goeth was arrested on 13 September 1944.
Büscher resisted Oskar Schindler"s efforts to include 300 Jewish women on his list of Schindlerjuden for work at Schindler"s new factory in Brünnlitz, instead sending them with other Jews of the Krakow-Płaszów concentration camp to Auschwitz I. Furthermore, Büscher, perhaps out of spite of Schindler, requested of Auschwitz I commandant Richard Baer that 300 different Jewish women be sent to Schindler"s factory.
Ultimately, Schindler was able to pay Baer to send him his 300 female Schindlerjuden. On 23 January 1948, Büscher was sentenced to death in Poland for his deeds at PłaszóWest
He was executed by hanging on August 2, 1949.