Simplify the following text for a Grade 12 native English-speaking person.
Original: Johann Altfuldisch ( born November 11 , 1911 , BrÃ 1\/4 ckenau , Germany â '' died May 28 , 1947 , Landsberg am Lech , Bavaria , Germany ) was SS-Obersturmf Ã 1\/4 hrer and a guard at Mauthausen-Gusen concentration camp where temporarily he was vice-chief of its central part .
Simplified: Johann Altfuldisch , ( November 11 , 1911 at BrÃ 1\/4 ckenau , Austria -- May 28 , 1947 at Landsberg am Lech ) was a member of the NSDAP and the Waffen-SS and one of the guards at the concentration camp Mauthausen .