 To assist in quelling the rebellion the German occupiers in August 1941 put in place the puppet government of Milan Nedić, which was also given responsibility for many Holocaust-related activities, including the registration and arrest of Jews and joint control over the Banjica concentration camp in Belgrade.On 13 April 1941, before the Royal Yugoslav Army formally capitulated, Wilhelm Fuchs – Chief of the Einsatzgruppen based in Belgrade – ordered the registration of the city's Jews.His order stated that all those who did not register would be shot.