(23 October 1903 — 12 May 1945) was an SS-Hauptsturmführer (Captain) and a civil engineer by profession who was head of the SS Central Building Administration in Lublin and was in charge of construction of the Operation Reinhard death camps Bełżec, Sobibor and Treblinka during The Holocaust in Occupied Poland. Born in Annahof in the former Upper Silesia region of the German Empire (now, the village of Sowin, Opole Voivodeship, Poland). Thomalla became a member of the Nazi Party in 1932: (no. 1,238,872) and SS (no. 41,206).