During his tenure as commander he oversaw numerous war crimes against the population,[1] most famously hanging of five prisoners at Terazije Square.

This was done with the blessing of Heinrich Himmler and Reinhard Heydrich but at great risk for Danckelmann as Adolf Hitler, Joachim von Ribbentrop, and the German High Command were not informed.

[4] During Danckelmann's rule, the Serbian population was terrorized in an effort to put down the uprising, while Nedić's government existed as helper to the occupier.

[2] Twenty-one people were executed and 50 were arrested for the killing of a German postman between September 1 and 3 in Belgrade.

[4] Danckelmann also enlarged the jurisdiction of Banjica concentration camp to the entire area of occupied Serbia, whereas it had previously been seen as limited to Belgrade.