Over the entire period from January 1944 to April 1945, more than 1,000 men were imprisoned in the Mülsen satellite camp. Most of them were from the Soviet Union, though there were also prisoners from France, Belgium, Italy, Germany, Czechoslovakia, and Poland.  Among them were political prisoners. One of them was Pierre Gilles of France, imprisoned for distributing anti-German propaganda.  The Mülsen St. Micheln camp and the death march would prove to be the end of his short life.

According to survivors' reports, there were also Soviet soldiers among the prisoners.  They may have been prisoners of war who were sent to concentration camps. They were treated particularly badly because Nazi ideology was also applied in camp structures. Western European prisoners received better treatment than their Eastern European counterparts.

(Titzmann 2024)

After the evacuation of Auschwitz in January 1945, the Jewish prisoner Eugene Zinn was sent to the Mülsen subcamp. He survived the death march and lived to see the war end in the Czech Republic. As a Holocaust survivor, he was interviewed in the United States in 1993 as part of a series of talks with contemporary witnesses, and the full interview is available online. In part 2, from minute 25:45, he talks about Mülsen and the death march: video.