Complex sentence: Koppe entrusted the extermination operation to "SS-Standartenführer" Ernst Damzog, Commander of Security Police and SD from the headquarters in occupied Poznań (Posen), who personally selected staff for the killing centre and later supervised its daily operation.
Split into simpler sentences: Koppe entrusted the extermination operation to "SS-Standartenführer" Ernst Damzog, Commander of Security Police and SD from the headquarters in occupied Poznań (Posen). He personally selected staff for the killing centre and later supervised its daily operation.