Meyszner's time in Belgrade was characterised by friction and competition with German military, economic and foreign affairs officials, and by his visceral hatred and distrust of Serbs. During his tenure, he oversaw regular reprisal killings and sent tens of thousands of forced labourers to the Reich and occupied Norway. His Gestapo detachment used a gas van to kill 8,000 Jewish women and children who had been detained at the Sajmište concentration camp. In April 1944, his outspoken complaints about a reduction in reprisals against civilians allowed his enemies within the German occupation regime in Serbia to have him removed. Himmler transferred him to Berlin with the task of establishing a Europe-wide Gendarmerie. After the war, he fell into the hands of the Allies and was interrogated by the United States Chief Counsel for the Prosecution of Axis Criminality. Extradited to Yugoslavia, he was tried for war crimes, along with many of his staff from his time in Serbia. He was found guilty by a Yugoslav military court and executed by hanging in January 1947.